Once a prophet came to Jacob's house. He told him that he talked to God, and God told him that he must pick a new God. Later on God chose David to be the ruler. Unfortunately the Ruler Saul did not know about this and was angry. There was a fight between Saul and David, of course David won, because God was on his side, and became the ruler. Then he conquered Jerusalem. He killed a lot of people in this bloody war. When he talked to God, God told him that he can't build the temple. He really wanted to build the Temple because he thought that he was the best of all.