He who has a deceitful heart finds no good, and he who has a perverse tongue falls into evil. (Proverbs 17:20, NKJV)
The heart and the tongue are connected. Jesus said, “A good man out of the good treasure of his heart brings forth good things, and an evil man out of the evil treasure brings forth evil things” (Matthew 12:35). In today’s verse, the deceitful heart (“crooked heart,” ESV) finds nothing good in others. Truly, “to those who are defiled and unbelieving nothing is pure” (Titus 1:15). Comparisons, complaints and disputes pour out of the mouth of the person whose heart is crooked and deceitful. As God’s children we are to “do all things without complaining and disputing” (Philippians 2:14). One way to see good in others instead of falling into contentiousness is to adorn our hearts with honesty, truth and love (Ephesians 4:25, 15). Unrestrained hearts unleash verbal grenades that maim and kill relationships and souls. We must constantly remember that tongue control begins with heart control (James 3:2, 8).
8 Now go, write it before them on a tablet, and note it on a scroll, that it may be for time to come, forever and ever: 9 That this is a rebellious people, lying children, children who will not hear the law of the Lord; 10 Who say to the seers, “Do not see,” and to the prophets, “Do not prophesy to us right things; Speak to us smooth things, prophesy deceits.” (Isaiah 30:8–10, NKJV)
God wanted there to be no doubt as to why Israel would come under the penalty of His judgment and be fragmented as a nation (Isaiah 30:12-14; Jeremiah 30:11). The prophet’s inscription of God’s word has left an indelible explanation that instructs us today. Like the rebellion of lying children who refuse to obey their parents, Israel rebelliously rejected and opposed God’s servants the prophets (Jeremiah 7:23-27). They rebelled at His word and called for smooth teachings instead of the right things of God. They were willing to be deceived by sin and error. Their rebellion was their downfall. Do not argue against the word of God. Do not call for smooth teachings that feel good but deny the truth (God’s word). One who refuses the truth of God is in rebellion against God. That is a most unenviable, most repulsive, place to be. If that is where you are, leave your rebellion and go back to your heavenly Father. He is merciful, and ready to forgive (Luke 15:11-24).
9 “The heart is deceitful above all things, and desperately wicked; Who can know it? 10 I, the Lord, search the heart, I test the mind, even to give every man according to his ways, according to the fruit of his doings. (Jeremiah 17:9–10, NKJV)
Now we are told why trusting in man brings the curse raised in Jeremiah 17:5-6. The heart is open to being deceived. It is where wickedness begins, and where it is housed. Jesus explained that sin comes from within us, from our hearts, and defiles us (Mark 7:20-23). The heart of which the Scriptures speak is not your blood pump, it is composed of your intellect, your will, your emotions, and your conscience. God knows the heart of every person, and He will render to every person “according to his ways.” Since our conduct proceeds from our heart, God’s judgment of us will be according to what we do (our ways, our doings). God does not say, “You have sinned, but your heart is good, therefore, everything is all right.” Instead, God says to “get yourselves a new heart and a new spirit,” that follows His will, and not your own (Ezekiel 18:31-32). Turn your heart away from sin and do God’s will. Then, both your heart and your life will be blessed by the Lord.
14 that we should no longer be children, tossed to and fro and carried about with every wind of doctrine, by the trickery of men, in the cunning craftiness of deceitful plotting, 15 but, speaking the truth in love, may grow up in all things into Him who is the head—Christ— (Ephesians 4:14–15, NKJV)
Maturity in Christ equips us to achieve and maintain the “the unity of the faith” to which we have been called by the gospel. Christ gave the work of inspired men (through which that gospel came to earth from heaven), and the work of uninspired men (who continue to proclaim and teach the gospel) to thoroughly equip us to serve the will of God as the body of Christ (Ephesians 4:11-13). In today’s text, our spiritual maturity prevents us from being tossed about like children by the prevailing winds of false doctrine. The “trickery of men” describes the sleight of hand by which one defrauds another. False doctrine defrauds and plunders the unsuspecting of their spiritual treasure (Colossians 2:8). The “cunning craftiness of deceitful plotting” describes the deceptive method of sophistry that attacks the simplicity of the gospel of Christ (Romans 16:17-18). As our maturity in Christ protects us, it also enables us to speak the truth in love. God’s truth equips us to grow in Christ, while protecting us from spiritual danger, and securing our standing with Christ (the Head of the church). Let us determine to grow up in Christ by becoming strong in the truth.