Proverbs 4:23 Keep your heart with all diligence, for out of it spring the issues of life.
Many of us are familiar with this passage, but only a few realize the magnitude of its importance in our daily lives.
Guarding the heart means wisely stewarding what we repeatedly receive, rehearse, and speak into our lives. What we allow into our heart inevitably shapes how we think, what we believe, how we speak and act. Let’s look at that process in light of Scripture. But first, let’s define exactly what the bible is talking about when it refers to the heart.
Defining the Heart.
When the Bible refers to the heart, it is not talking about our physical organ that pumps blood, but our entire inner man. The heart consists of our spirit, our soul, our mind, our will, and our emotions. It houses our ability to reason, to meditate, and to focus. It holds the creative parts of our being that think, feel, and choose. It is also the source of our personality and the wellspring of our creative imagination. If you study the words soul, spirit, and heart, you will see that there is a tremendous amount of overlap in the use of these words. If you try to separate those words and define them individually, you will just come away scratching your head.
To make it simple, I will tell you what the Lord showed me when I was struggling with this. We have an inner man (the eternal part of our being), and we have an outer man (the temporal part of our being, the physical body which is still bound by the curse and will eventually die and need to be glorified). In the Bible, the “heart” (lev or levav in Hebrew, kardia in Greek) speaks of the whole inner man. It is the center of thoughts, desires, affections, intentions, and moral choice.
The Struggling Heart
There is a reason that many believers struggle with overcoming bad habits, inner turmoil, recurring sin, anxiety and depression, and a roller-coaster type of relationship with the Lord.
I have personally experienced all these examples and was trapped in these seemingly endless cycles for years. So, please hear me clearly; I am not accusing anyone or making light of their struggles in any way. My heart breaks when I see my brothers and sisters bound by these types of struggles. I am writing this to help people get free and understand some critical aspects of our spiritual life and how spiritual warfare is a harsh reality for every Christian.
When we find ourselves reacting the same way, thinking the same way, falling into the same patterns, and fighting the same old battles, it is not because we are weak; it is not because we are broken beyond repair. It just means we need to understand that we are in a battle and our hearts have not been properly guarded but trained by what we keep letting it be exposed to. Please don’t miss this.
Everything that enters our hearts must come through the doorway of our mind. If we don’t guard that door, our hearts will be influenced and corrupted by our adversary.
Biblical guarding of the heart involves spiritual understanding, discipline, and discernment—not fear, withdrawal, or suspicion. Believers can encounter difficult ideas and uncomfortable situations while evaluating them through the wisdom of Scripture and the help of the Holy Spirit.
The images we see, the songs we sing, the voices we listen to, and the thoughts we rehearse over and over in our minds have a tremendous impact on our lives. Our hearts are designed by God to be creative, and they can only create things from the materials that are available—the materials we allow into our inner man.
Because the heart represents the inner man, guarding it means carefully stewarding what enters and remains there. Voices, images, conversations, and repeated thoughts can function like seeds: what we continue to receive and reinforce can eventually take root and bear fruit. Our hearts are God’s garden, and we are responsible to tend that garden with His help.
When we repeatedly expose our minds to the same things, whether positive or negative, our hearts begin to create a picture on the inside—an image, or blueprint that becomes clearer and more defined with time. When the pictures on the inside of us align with God’s Word, we call that HOPE.
Hope is a crucial part of our Christian life. Hope and faith work together to enable us to live our lives supernaturally. Faith can give substance to and provide evidence of hope, even though we can’t physically see it yet.
Hebrews 11:1–3 Now faith is the substance of things hoped for, the evidence of things not seen. 2 For by it the elders obtained a good testimony. 3 By faith we understand that the worlds were framed by the word of God, so that the things which are seen were not made of things which are visible.
If we don’t guard our hearts, the enemy will do his best to sow seeds in our inner man that are anti-Christ and produce hopelessness. Our faith cannot give substance to, or provide evidence of hopelessness, but fear can.
Fear is the opposite of faith but works on exactly the same principles and is governed by the same spiritual laws.
Romans 10:17 So then faith comes by hearing, and hearing by the word of God.
Faith comes by hearing. But let’s look at this carefully: If faith can come by hearing, fear can also come by hearing. If faith can be built through repeatedly hearing truth, fear and anxiety can come through repeatedly hearing lies that contradict truth. If the Word of God can renew our minds, the wrong words can keep our minds from being renewed.
Fear grows through a pattern similar to faith: repeated attention, agreement, and expectation—but faith rests on God’s character and the eternal truth of His Word, while fear magnifies a threat, a lie, or a bad report.
That means we cannot keep feeding our hearts with negativity and expect our faith to grow. We cannot sit in front of a screen and keep feeding our imagination with lust, violence, rage, hate, cursing, lies, and fantasy and expect faith to come easily. We can’t keep feeding our insecurities and comparison and expect our confidence to rise.
God is not condemning us. He is showing us how the heart works. Whatever we feed grows. Whatever we starve dies.
Galatians 6:7–8 Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap. 8 For he who sows to his flesh will of the flesh reap corruption, but he who sows to the Spirit will of the Spirit reap everlasting life.
Whatever we repeat strengthens. Whatever we meditate on magnifies. Whatever we keep allowing into our hearts, eventually we start speaking it from our mouths.
God’s Word is incorruptible seed. What would happen if we stopped allowing the enemy to plant corrupted seed in our inner man and started diligently sowing God’s Word into our hearts instead? I can tell you exactly what would happen: we would be transformed into the image of God that man was originally intended for.
This is why God’s Word tells us in Romans 12 to be transformed, not conformed.
Romans 12:1–2 I beseech you therefore, brethren, by the mercies of God, that you present your bodies a living sacrifice, holy, acceptable to God, which is your reasonable service. 2 And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.
By allowing Satan to trick us into allowing both good seed and bad seed to be sown in our hearts, we become double-minded, wavering in faith, and eventually find ourselves in a condition of opposing ourselves. When we are in opposition to ourselves, we are crippled in our walk with God and held captive by the enemy.
2 Timothy 2:24–26 (KJV) And the servant of the Lord must not strive; but be gentle unto all men, apt to teach, patient, 25 in meekness instructing those that oppose themselves; if God peradventure will give them repentance to the acknowledging of the truth; 26 and that they may recover themselves out of the snare of the devil, who are taken captive by him at his will.
The devil doesn’t even mind it when we go to church, get involved in Bible studies, and read the Bible every day, as long as he can continue to have access to our inner man.
He knows if he can keep us double-minded, he can keep us from receiving God’s amazing promises and enjoying our inheritance that is our covenant right.
Religious activity does not guarantee inner transformation if we are double-minded and continue agreeing with destructive patterns.
James 1:5-8 If any of you lacks wisdom, let him ask of God, who gives to all liberally and without reproach, and it will be given to him. 6 But let him ask in faith, with no doubting, for he who doubts is like a wave of the sea driven and tossed by the wind. 7 For let not that man suppose that he will receive anything from the Lord; 8 he is a double-minded man, unstable in all his ways.
Instability and double-mindedness are Satan’s primary goals. He knows that a double-minded Christian is a powerless witness.
Strongholds in the Heart
What is a stronghold? A stronghold is anything that has a strong hold on you. It’s that simple.
Have you ever said something like this? “I will not worry or be anxious about that anymore,” but still keep reacting with fear and anxiety? Or “I am never going back to that bad habit again,” but somehow keep being pulled back toward what has been sown, watered, and firmly established in your heart?
Have you ever reacted in a negative way and later thought, “Why did I say that? Why did I speak to them that way? Why did I go back to that habit? Why did I panic so quickly? Why did that shake me so deeply?” This behavior is evidence of a stronghold.
The negative reactions did not begin at that moment. They begin with what has been stored up in our hearts, what has been built brick by brick over time. When pressure comes, and we get squeezed, what is stored in our hearts comes out. The pressures and trials of life will always reveal what is in our hearts in abundance.
God gives another piece of wise instruction in 2 Corinthians 10 on how to deal with strongholds.
2 Corinthians 10:3–5 For though we walk in the flesh, we do not war according to the flesh. 4 For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, 5 casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ
Strongholds are not always negative. We can build positive strongholds of truth and faith as easily as the enemy can deceive us into building strongholds of doubt and unbelief. But to build strongholds of faith, we must also stop the devil’s access to our inner man, providing him with the building blocks for constructing negative strongholds.
Consider this: Picture a big bouncer at the door of your mind, checking the ID of every thought that tries to enter. If it contradicts God’s Word or your personal understanding of God’s character, you deny it entrance. You take it captive.
We must stop leaving our hearts unguarded, letting everything have free access to our creative inner man. We can’t let just any voice have access to the place our life flows from. What enters repeatedly will eventually get rooted and established, becoming a stronghold and affecting our reality, shaping the future.
Luke 6:45 A good man out of the good treasure of his heart brings forth good; and an evil man out of the evil treasure of his heart brings forth evil. For out of the abundance of the heart his mouth speaks.
In other words, when life squeezes us, what is stored inside us comes out.
If fear has been stored, fear speaks. If bitterness has been stored, hatred reacts. If shame has been stored, shame hides. If insecurity has been stored, insecurity compares. If anger has been stored, anger attacks. But if the Word of God has been stored, truth rises. If faith has been fed, courage arises. If peace has been stored, stability is present. If our identity in Christ has been firmly established, confidence in God is unshaken. This is why guarding our heart is not optional. It is survival. It is wisdom. It is spiritual discipline. It is the tactical spiritual warfare of a Christian with understanding.
The question, then, is not merely whether a thought appears, but whether we welcome it, rehearse it, agree with it, and give it license to shape us. This leads us to the practical question of where those influences enter and how we can respond at each point of access.
Satan’s Sneaky Strategy
The bible says the enemy comes to steal, kill, and destroy. He doesn’t need to destroy our lives directly. He just needs access to our inner man. He knows if he can influence what we keep seeing, hearing, and thinking, he can steal our power, our influence, our peace, our hopes and dreams, and rob us of our identity. He can kill our confidence, weaken our faith, diminish our witness to the world.
The battlefield to control our heart is the mind because the mind is the doorway to our hearts. Everything that finds its way into our heart came through the entrances of our mind. This is where spiritual warfare takes place.
There are four primary entrances to our hearts: Our eyes, our ears, our thoughts, and our mouths. These “doorways” to our inner man must be accessed through the mind. Remember, the mind is the battlefield.
It is easy to see how what we see, hear, and think about repeatedly can affect our hearts. We have touched on that already. But the mouth holds a unique place in this process and may be the most significant doorway to steward.
When we verbalize our agreement with Satan’s deception, we empower him to build the strongholds, strengthen his position and voluntarily remain captive to his deception. Our words can agree with Satan’s deception or tear down the strongholds of deception.
Proverbs 18:20-21 A man’s belly shall be satisfied from the fruit of his mouth; From the produce of his lips he shall be filled. 21 Death and life are in the power of the tongue, And those who love it will eat its fruit.
We can use our mouths to wield the sword of the spirit, speaking God’s word and destroying the enemy’s strongholds. We are in a fight, and yet many Christians are on the sidelines as spectators. We can’t win any battles that way.
1 Timothy 6:11-12 But you, O man of God, flee these things and pursue righteousness, godliness, faith, love, patience, gentleness. 12 Fight the good fight of faith, lay hold on eternal life, to which you were also called and have confessed the good confession in the presence of many witnesses.
Practical Steps: How We Fight the Good Fight.
- We audit our input: We ask ourselves honestly: What are we watching every day? What do we listen to every day? Who are we allowing to speak into our lives every day? What thoughts are we repeating every day? What emotions are we feeding every day? Our daily input is shaping our future.
- We ask the question: Before we watch it, listen to it, entertain the conversation, or replay the memory, we ask, “What is this planting in us? Is this sowing faith or fear, peace or panic, purity or lust, gratitude or comparison, discipline or distraction, hope or despair, Christlikeness or old patterns?” Not everything that entertains us helps us. Some things are discipling us in the wrong direction.
- We replace; we don’t just remove: This is important. Our heart not only needs us to stop sowing bad seeds. We need to start sowing incorruptible seed. If we remove fear, we replace it with Scripture. If we remove toxic music, we replace it with worship. If we remove gossip, we replace it with silence and prayer for the ones we are gossiping about. If we remove comparison, we replace it with gratitude. If we remove faithless thoughts and anxiety loops, we replace them with God’s spoken promises.
- We steward our focus: Guarding the heart is not merely shutting bad things out; it is keeping the heart open to God, rooted in truth, and responsive to His Spirit. Philippians 4:8-9 gives us clear instruction on how to guard the heart.
Philippians 4:8-9 Finally, brethren, whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy—meditate on these things. 9 The things which you learned and received and heard and saw in me, these do, and the God of peace will be with you.
Romans 12:2 does not only say, “Stop being conformed to this world.” It says, “Be transformed by the renewing of your mind.” Renewing means new input, new meditation, new repetition, new focus, new words, new patterns, and new truth.
So, when Proverbs 4:23 says, “Guard your heart,” it is not just telling us to avoid the bad things. It is telling us to protect the Kingdom of God within us.
Luke 17:20–21 Now when He was asked by the Pharisees when the kingdom of God would come, He answered them and said, “The kingdom of God does not come with observation; 21 nor will they say, ‘See here!’ or ‘See there!’ For indeed, the kingdom of God is within you.”
Our hearts are not actually ours once we are born again. The Kingdom of God is in the garden of our hearts. God dwells there. We have a stewardship over this Kingdom, and we are not expected to do this on our own. This is why God gave us the Holy Spirit. With His help, we can protect and defend the place where thoughts are formed, desires are shaped, emotions are trained, reactions become automatic, and our future decisions begin.
Mark 4 tells us how the Kingdom works, what the Kingdom is like, and how it grows.
Mark 4:26 And He said, “The kingdom of God is as if a man should scatter seed on the ground,
Mark 4:30–32 Then He said, “To what shall we liken the kingdom of God? Or with what parable shall we picture it? 31 It is like a mustard seed which, when it is sown on the ground, is smaller than all the seeds on earth; 32 but when it is sown, it grows up and becomes greater than all herbs, and shoots out large branches, so that the birds of the air may nest under its shade.”
If we don’t guard our hearts, we leave the Kingdom of God unprotected. We allow the world to conform us into its image, and we hinder the Kingdom within us from growing, expanding, and taking over our inner man.
Guarding our hearts is not about being fearful, suspicious, or obsessed with doing everything perfectly. It is not a way to earn God’s love or prove that we are “super spiritual.” We guard our hearts because God has already loved us, received us, and made us His own through the blood of Jesus Christ.
Some of us may recognize that we have allowed fear, bitterness, shame, distraction, or unhealthy patterns to take root. That realization should not bring condemnation. It is an invitation to grace. Jesus does not expose what is in our hearts so He can reject us; He brings it into the light so He can heal, renew, and restore us. He loves us.
We won’t uproot every old pattern and break down every stronghold in a single day. Transformation happens one decision, one thought, one prayer, and one seed of truth at a time. Our hope does not rest in the strength of our discipline alone. Our hope is in the Holy Spirit, who patiently works within us, teaches us to recognize truth, and empowers us to choose what leads to life.
So, let’s ask ourselves: What is one thing I need to stop feeding and watering, and what truth from God’s Word will I begin to sow and water instead? Then let us take that step—not from fear, shame, or striving, but from the security of knowing that God is with us in the process.
Proverbs 4:23 tells us to guard our hearts with all diligence because the issues of life flow from them. But we do not stand guard alone. The Shepherd of our souls is present. His mercy forgives us when we fail, His truth renews our minds, and His Spirit gives us strength and grace to be good stewards of our hearts.
Guard the gate. Tend the garden. Take thoughts captive. Sow the truth. Be consistent. Trust the Spirit to produce the fruit.
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JESUS IS COMING!
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