'Heart' in the Bible

On the seventh day, when the heart of the king was glad with wine, he gave orders to Mehuman, Biztha, Harbona, Bigtha, and Abagtha, Zethar, and Carcas, the seven unsexed servants who were waiting before Ahasuerus the king,

But when the servants gave her the king's order, Vashti the queen said she would not come: then the king was very angry, and his heart was burning with wrath.

Then on that day Haman went out full of joy and glad in heart; but when he saw Mordecai in the king's doorway, and he did not get to his feet or give any sign of fear before him, Haman was full of wrath against Mordecai.

Then his wife Zeresh and all his friends said to him, Let a pillar, fifty cubits high, be made ready for hanging him, and in the morning get the king to give orders for the hanging of Mordecai: then you will be able to go to the feast with the king with a glad heart. And Haman was pleased with the suggestion, and he had the pillar made.

Then King Ahasuerus said to Esther the queen, Who is he and where is he who has had this evil thought in his heart?