'Hearts' in the Bible

If we say we have no sin [refusing to admit that we are sinners], we delude ourselves and the truth is not in us. [His word does not live in our hearts.]

If we say that we have not sinned [refusing to admit acts of sin], we make Him [out to be] a liar [by contradicting Him] and His word is not in us.

I have written to you, fathers, because you know Him who has existed from the beginning. I have written to you, young men, because you are strong and vigorous, and the word of God remains [always] in you, and you have been victorious over the evil one [by accepting Jesus as Savior].

As for you, let that remain in you [keeping in your hearts that message of salvation] which you heard from the beginning. If what you heard from the beginning remains in you, you too will remain in the Son and in the Father [forever].

As for you, the Spirit which he gave you is still in you, and you have no need of any teacher; but as his Spirit gives you teaching about all things, and is true and not false, so keep your hearts in him, through the teaching which he has given you.

And now, my children, keep your hearts in him; so that at his revelation, we may have no fear or shame before him at his coming.

And hereby we know that we are of the truth, and shall assure our hearts before him.

even if our conscience condemns us, that God is greater than our conscience, and He knows all things.

Dear friends, if our conscience doesn’t condemn us, we have confidence before God

No one has ever yet seen God. If we love one another, God continues in union with us, and His love in all its perfection is in our hearts.