'Heart' in the Bible

If the spirit of doubt comes into her husband's heart, and he has doubts of his wife, with good cause; or if he has doubts of her without cause:

Or for a husband who, in a bitter spirit, has doubts in his heart about his wife; let him take her to the priest, who will put in force this law.

And if the land is fertile or poor, and if there is wood in it or not. And be of good heart, and come back with some of the produce of the land. Now it was the time when the first grapes were ready.

But my servant Caleb, because he had a different spirit in him, and has been true to me with all his heart, him I will take into that land into which he went, and his seed will have it for their heritage.

But the person who does wrong in the pride of his heart, if he is one of you or of another nation by birth, is acting without respect for the Lord, and will be cut off from his people.

And all Israel round about them went in flight at their cry, For fear, said they, that we go down into the heart of the earth.

And Balak said to Balaam, Did I not send to you, requesting you with all my heart to come to me? why did you not come? am I not able to give you a place of honour?

Truly, not one of the men of twenty years old and over who came out of Egypt will see the land which I gave by oath to Abraham, Isaac, and Jacob; because they have not been true to me with all their heart;