'Hearts' in the Bible

They prayed and said, “You, Lord, who know all hearts [their thoughts, motives, desires], show us which one of these two You have chosen

Day after day they met in the temple [area] continuing with one mind, and breaking bread in various private homes. They were eating their meals together with joy and generous hearts,

Our fathers were unwilling to be subject to him [and refused to listen to him]. They rejected him, and in their hearts turned back to Egypt.

yet He did not leave Himself without some witness [as evidence of Himself], in that He kept constantly doing good things and showing you kindness, and giving you rains from heaven and productive seasons, filling your hearts with food and happiness.”

strengthening and establishing the hearts of the disciples; encouraging them to remain firm in the faith, saying, “It is through many tribulations and hardships that we must enter the kingdom of God.”

and He made no distinction between us and them, cleansing their hearts by faith [in Jesus].