'Heart' in the Bible

He that has the bride is the bridegroom; but the friend of the bridegroom, who stands and hears him, rejoices in heart because of the voice of the bridegroom: this my joy then is fulfilled.

He has blinded their eyes and hardened their heart, that they may not see with their eyes, and understand with their heart and be converted, and I should heal them.

And during supper, the devil having already put it into the heart of Judas son of Simon, Iscariote, that he should deliver him up,

Let not your heart be troubled; ye believe on God, believe also on me.

I leave peace with you; I give my peace to you: not as the world gives do I give to you. Let not your heart be troubled, neither let it fear.

But because I have spoken these things to you, sorrow has filled your heart.

And ye now therefore have grief; but I will see you again, and your heart shall rejoice, and your joy no one takes from you.