What does the Bible say about the heart?
The heart is deceitful above all things and beyond cure. Who can understand it? Jeremiah 17:9
Their tongue is a deadly arrow; it speaks deceitfully. With their mouths they all speak cordially to their neighbors, but in their hearts they set traps for them. Jeremiah 9:8
Their heart is deceitful, and now they must bear their guilt. The Lord will demolish their altars and destroy their sacred stones. Hosea 10:2
You may say that those are Old Testament verses that don’t apply today. So let us look at the New Testament.
In the Sermon on the Mount, Jesus said; Blessed are the pure in heart, for they will see God. Matthew 5:8
What is a pure heart? A pure heart is one that is free from sin. At the time we accept Christ as our savior, our hearts are pure. It is what we do to the pure heart that changes the purity. If God gives us a pure heart, how can we let it become sinful? In other words, it is sinful because we allow it to become sinful. Consider these verses.
But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart. Matthew 5:28
20 But store up for yourselves treasures in heaven, where moths and vermin do not destroy, and where thieves do not break in and steal. 21 For where your treasure is, there your heart will be also. Matthew 6:20-21
When anyone hears the message about the kingdom and does not understand it, the evil one comes and snatches away what was sown in their heart. This is the seed sown along the path. Matthew 13:19
‘These people honor me with their lips, but their hearts are far from me. They worship me in vain; their teachings are merely human rules.’ Matthew 15:8-9 (Quoting Isaiah 29:13)
Each tree is recognized by its own fruit. People do not pick figs from thorn bushes, or grapes from briers. 45 A good man brings good things out of the good stored up in his heart, and an evil man brings evil things out of the evil stored up in his heart. For the mouth speaks what the heart is full of. Luke 6:44-45
Be careful, or your hearts will be weighed down with carousing, drunkenness and the anxieties of life, and that day will close on you suddenly like a trap. Luke 21:34
Peter answered: “May your money perish with you, because you thought you could buy the gift of God with money! 21 You have no part or share in this ministry, because your heart is not right before God. 22 Repent of this wickedness and pray to the Lord in the hope that he may forgive you for having such a thought in your heart. 23 For I see that you are full of bitterness and captive to sin.” Acts 8:10-13
For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. 22 Although they claimed to be wise, they became fools 23 and exchanged the glory of the immortal God for images made to look like a mortal human being and birds and animals and reptiles.
24 Therefore God gave them over in the sinful desires of their hearts to sexual impurity for the degrading of their bodies with one another. 25 They exchanged the truth about God for a lie, and worshiped and served created things rather than the Creator—who is forever praised. Amen.
26 Because of this, God gave them over to shameful lusts. Even their women exchanged natural sexual relations for unnatural ones. 27 In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed shameful acts with other men, and received in themselves the due penalty for their error.
28 Furthermore, just as they did not think it worthwhile to retain the knowledge of God, so God gave them over to a depraved mind, so that they do what ought not to be done. 29 They have become filled with every kind of wickedness, evil, greed and depravity. They are full of envy, murder, strife, deceit and malice. They are gossips, 30 slanderers, God-haters, insolent, arrogant and boastful; they invent ways of doing evil; they disobey their parents; 31 they have no understanding, no fidelity, no love, no mercy. 32 Although they know God’s righteous decree that those who do such things deserve death, they not only continue to do these very things but also approve of those who practice them. Romans 1:21-32
How is your heart? Can you trust it?
9 If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved.10 For it is with your heart that you believe and are justified, and it is with your mouth that you profess your faith and are saved. 11 As Scripture says, “Anyone who believes in him will never be put to shame.”[e]12 For there is no difference between Jew and Gentile—the same Lord is Lord of all and richly blesses all who call on him, 13 for, “Everyone who calls on the name of the Lord will be saved.” Romans 10:9-13
Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God.7 And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus. Philippians 4:6-7
Note: All scriptures used in this article have been downloaded from http://www.biblegateway.com/?version=NIV unless otherwise noted.