'Hearts' in the Bible

So that, looking on these ornaments, you may keep in mind the orders of the Lord and do them; and not be guided by the desires of your hearts and eyes, through which you have been untrue to me:

Then Moses and Aaron made the people come together in front of the rock, and he said to them, Give ear now, you people whose hearts are turned from the Lord; are we to get water for you out of the rock?

The people spoke against God and against Moses, "Why have you brought us from Egypt to die in the desert? There is no food and no water, and our hearts detest [this] miserable food."

Now why are you discouraging the hearts of the Israelites from crossing over into the land which the Lord has given them?

For when they went up to the Valley of Eshcol and saw the land, they discouraged the hearts of the Israelites so that they did not go into the land which the Lord had given them.