The last 17 months have been stressful and challenging unlike any other time. During this period of my life, God impressed upon my heart to pursue guarding my heart and mind from doubt, fear, unbelief, and waning faith. Because, what we hold in our mind, which is the battlefield where the enemy daily wages war, will feed the heart.  

The heart is mentioned 830 times in the King James Bible, so we can assume that God wants us to understand the spiritual components of the heart. For the heart is a reservoir that can either hold things that support life and faith, or it can hold things that impede and even destroy life and faith. 

The mouth is the heart’s barometer. That which is in the heart overflows into our speech (Luke 6:45). Jesus said, “…I tell you that every careless word that people speak, they shall give an accounting for it in the day of judgment”— “for death and life are in the power of the tongue” (Matthew 12:36; Proverbs 18:21;).

King David said, “Set a guard over my mouth, Lord; keep watch over the door of my lips (Psalm 141:3-4). Our words have potential to encourage and uplift, or they can harm us and others. What word-containers are held in our hearts? “The mouth speaks what the heart is full of” (Luke 6:34 NIV).

The deceitful heart makes its plans. “The heart is deceitful above all thingsand desperately wicked; who can know it?” (Jeremiah 17:9). What concealed motives, hidden secrets, or personal agendas do we have tucked inside our hearts?

The foolish and careless heart knows God, but does not glorify Him as God, nor is it thankful, but is futile in its thoughts and becomes darkened (Romans 1:21). What things that God calls “sin unto death,” have been tolerated and accepted by society and many Christians, because their understanding has become darkened by world philosophies?

The willful heart walks in disobedience and rebellion. Satan was the “seal of perfection,” full of wisdom and perfect in beauty (Ezekiel 2:12-19). But he became prideful and said sin his heart, “I will ascend into heaven. I will exalt my throne above the stars of God. I will be like the Most Hgh” (Isaiah 14:11-15). Those two words, I will, reveal pride that precipitated Satan’s great fall. That old sin nature continually draws the human heart to willful disobedience and rebellion.

An obstinate heart is hardened to God’s truth, guidance, direction, and is ill-informed about divine things (Deuteronomy 2:30. The Oxford American Writer’s Thesaurus defines “obstinate” as stubborn, unyielding, inflexible, unbending, bull-headed, self-willed, uncooperative, uncompromising, rigid, and immovable. The obstinate heart is easily deceived, leading to wrong decisions.

The Apostle Paul said of the obstinate, that their foolish hearts are darkened because their spiritual eyes are closed (Romans 1:21). Blessed is the one who fears the Lord always, but whoever hardens his heart will fall into calamity (Proverbs 28:14 ESV). Do we yield daily to the things of God?

A heart of unbelief is a dangerous place. “Beware, brethren, lest there be in any of you an evil heart of unbelief in departing from the living God, but exhort one another daily, while it is called “today,” lest any of you be hardened through the deceitfulness of sin” (Hebrews 3:12-13). Unbelief leads to backsliding and heresy.

The heart holds desires. We are forewarned against lust, covetousness, and envy, and told to set our hearts on those things above, for where our treasure is, there our heart will be found (Colossians 3:1; Matthew 6:21). Do we desire God above all earthly things?

An obedient and willing heart says “yes” to God. Jesus asked His Father in the Garden of Gethsemane, “Father, if You are willing, take this cup away from Me—nevertheless, not my will, but Yours be done (Luke 22:41-43). Even Jesus struggled with surrendering His will, but His love for mankind and His Father was greater than what He desired, and He surrendered all to God. What are we willing to surrender to God?

God requires a pure heart of integrity, which is principled, honorable, upright, truthful, ethical, and moral. “Whoever walks in integrity walks securely, but whoever takes crooked paths will be found out. “For it is the righteous man who walks in his integrity, that his children are blessed after him” (Proverbs 10:9; 20:7). Shading the truth, misleading, deceiving, lying and exaggerating all contribute to an impure heart.

The heart thinks. What we think in our heart, we become (Proverbs 23:7). Jesus asked, “Why do you entertain evil thoughts in your hearts?” (Matthew 9:4) We are to think on what is true, noble, right, lovely, admirable, excellent, pure, and praiseworthy (Philippians 4:8). What consumes our thoughts?

The heart remembers, reflects, and meditates. “Mary treasured up all these things and pondered them in her heart” (Luke 2:19). To “ponder” is to meditate, consider, reflect, review, and deliberate. “May the words of [our] mouth and the meditation of [our] heart be acceptable to You, Lord, [our] rock and [our] Redeemer” (Psalm 19:14). Do we daily reflect on God’s Word?

The heart understands, discerns, and gives insight.Paul’s letter to the Ephesians said, “I pray also that the eyes of your heart may be enlightened in order that you may know the hope to which He has called you, the riches of His glorious inheritance in the saints” (Ephesians 1:18). The Holy Spirit will illuminate our heart with understanding when we seek Him.

The heart is a reservoir of either good or bad. We choose what goes into that reservoir. Are we choosing wisely? Are we choosing God’s Word, for His Word is a safeguard against sin (Psalm 119:11).

The heart functions as our conscience. It is the inner forum where decisions are made. “In his heart a man plans his course, but the Lord determines his steps” (Proverbs 16:9). Do we include God in our decision-making, or do we make our own plans?

The faith-filled heart possesses unwavering trust, integrity, purity, obedience, willingness, discernment, insight, understanding, wisdom, joy, and much more. It trusts God in all circumstances. Conversely, a hard and unyielding heart follows its own path with doubt, fear, unbelief, pride, sin, inflexibility, stubbornness, rebellion, sinful and negative thoughts, lust, envy, covetousness, and unforgiveness. 

The more we invest in God and His Word, the more we allow His extravagant love and peace to work in and through us. He wants us to trust Him and to pour our hearts out before Him (Psalm 62:8). When we speak God’s Word and believe what we speak, His powerful and creative Word become action.

God’s Word transforms hearts of unbelief into pure hearts of faith? He always responds to faith that is anchored to His sovereign Word. We can depend on His Word to bring truth to our souls, to heal, encourage, direct, lift burdens, and fill our hearts with joy and peace. His Word has power to daily transform our hearts and renew our minds. 

PRAYER: FATHER, like King David, I ask that You “Create in me a clean heart and renew a right spirit within me” (Psalm 51:10). Help me embrace and understand Your Word, as I read it each day, so that I may know how to guard my heart. In Jesus’ name, amen.