'Heart' in the Bible

For I wrote to you with many tears out of an extremely troubled and anguished heart—not that you should be hurt, but that you should know the abundant love I have for you.

We are not commending ourselves to you again, but giving you an opportunity to be proud of us, so that you may have a reply for those who take pride in the outward appearance rather than in the heart.

We have spoken openly to you, Corinthians; our heart has been opened wide.

Thanks be to God who put the same concern for you into the heart of Titus.

Each person should do as he has decided in his heart—not reluctantly or out of necessity, for God loves a cheerful giver.