'Heart' in the Bible

The one who believes in me, as the Scripture has said, will have rivers of living water flowing from his heart."

"He has blinded their eyes and hardened their heart, so that they might not perceive with their eyes, and understand with their mind and turn, and I would heal them."

By supper time, the Devil had already put it into the heart of Judas, the son of Simon Iscariot, to betray him.