The Lord was with Jehoshaphat because he followed the example of his father David’s earlier days and did not seek the Baals,

Then Jehoiada the priest gave to the captains of hundreds the spears and the large and small shields which had been King David’s, which were in the house of God.

Then Solomon brought Pharaoh’s daughter up from the city of David to the house which he had built for her, for he said, “My wife shall not dwell in the house of David king of Israel, because the places are holy where the ark of the Lord has entered.”