'Heart' in the Bible

Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.

Or is it nothing to you that God had pity on you, waiting and putting up with you for so long, not seeing that in his pity God's desire is to give you a change of heart?

But after thy hardness and impenitent heart treasurest up unto thyself wrath against the day of wrath and revelation of the righteous judgment of God;

but glory and honor and inner peace [will be given] to everyone who habitually does good, to the Jew first and also to the Greek.

But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.

But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.

In my heart I take pleasure in the law of God,

Thanks be to God [for my deliverance] through Jesus Christ our Lord! So then, on the one hand I myself with my mind serve the law of God, but on the other, with my flesh [my human nature, my worldliness, my sinful capacity—I serve] the law of sin.

That I have great heaviness and continual sorrow in my heart.

Therefore, God has mercy on whomever he chooses, and he hardens the heart of whomever he chooses.

Brethren, the pleasure indeed of my heart, and my supplication that is to God for Israel, is -- for salvation;

But the righteousness which is of faith speaketh on this wise, Say not in thine heart, Who shall ascend into heaven? (that is, to bring Christ down from above:)

But what saith it? The word is nigh thee, even in thy mouth, and in thy heart: that is, the word of faith, which we preach;

That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.

For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.

for the kingdom of God is not a matter of eating and drinking [what one likes], but of righteousness and peace and joy in the Holy Spirit.

so that with oneness both of heart and voice you may glorify the God and Father of our Lord Jesus Christ.

But as to you, brethren, I am convinced-- yes, I Paul am convinced--that, even apart from my teaching, you are already full of goodness of heart, and enriched with complete Christian knowledge, and are also competent to instruct one another.

so that by God’s will I may come to you with joy and find rest in your company.