'Heart' in the Bible

On the seventh day, when the heart of the king was merry with wine, he commanded Mehuman, Biztha, Harbona, Bigtha, and Abagtha, Zethar, and Carcas, the seven chamberlains that served in the presence of 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.

And Mordecai bade to answer Esther: Imagine not in thy heart that thou shalt escape in the king's house, more than all the Jews.

Then went Haman forth that day joyful and with a glad heart: but when Haman saw Mordecai in the king's gate, that he stood not up, nor moved for him, he was full of indignation 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.

So Haman came in. And the king said unto him, What shall be done unto the man whom the king delighteth to honour? Now Haman thought in his heart, To whom would the king delight to do honour more than to myself?

Then the king Ahasuerus answered and said unto Esther the queen, Who is he, and where is he, that durst presume in his heart to do so?