'Heart' in the Bible

It happened that when the ark of Yahweh came [into] the city of David, Michal the daughter of Saul looked down through the window and saw King David leaping and dancing before Yahweh, and she despised him in her heart.

Nathan said to the king, "Go and do all that [is] in your heart, for Yahweh [is] with you."

Because of your word and according to your heart, you have done all of this great thing, [in order] to let your servant know.

Absalom her brother said to her, "[Was] Amnon your brother with you? But now, my sister, be quiet; he [is] your brother. {Do not take this matter to heart}." So Tamar remained a desolate woman in the house of Absalom her brother.

Absalom commanded his servants, saying, "Please watch. At the moment the heart of Amnon [is] {tipsy} with wine, then I shall say to you, 'Strike Amnon down,' and you shall kill him! Don't be afraid. [Is] it not I myself who has commanded you? Be courageous and be {valiant!}

So then, let not my lord the king set his heart on this matter, thinking, 'All the sons of the king [are] dead,' for only Amnon alone [is] dead."

And he [is] also a {valiant warrior}, whose heart [is] like the heart of the lion. He will {certainly melt} with fear, for all Israel knows that your father [is] a mighty warrior and [those] who [are] with him [are] {valiant warriors}.

Joab said, "No longer will I wait in your presence." Then he took three spears in his hand and thrust them into the heart of Absalom while he [was] still alive in the oak tree.

So he turned the heart of all the men of Judah as one man, and they sent [word] to the king, "Return, you and all your servants."

and he said to the king, "May not my lord hold me guilty, and may you not remember how your servant did wrong on the day that my lord the king went out from Jerusalem, by taking it to heart!

Children of a foreign land lost heart and came trembling from their strongholds.

The heart of David struck him after he had counted the people, and David said to Yahweh, "I have sinned greatly in what I have done! So then, O Yahweh, please forgive the guilt of your servant because I have acted very foolishly."