Who was David in the Bible?

What do you know about King David in the Bible?

David was the second king of Israel, he is was known as a mighty warrior from the battle were he killed Goliath bringing Victory to the people of Israel.
David was annointed to take the throne of Israel from King Saul after the king chose to disobey the instructions of the Lord in a battle.
“But now your [Saul’s] kingdom will not endure; the LORD has sought out a man after his own heart and appointed him leader of his people, because you
have not kept the LORD’s command.”
1 SAMUEL 13:14
Whether it’s a eulogy at a funeral or a bit of reminiscing at the dinner table, it always seems like the best things are said about people when they are not around to hear it. In David’s case, God’s highest praise of
him was spoken not to David but to Saul when the Lord was rebuking him for his unfaithfulness.
Understandably, David is famous for many things throughout his life – mostly good, but some bad. As a boy, he killed the giant Goliath and played the harp to soothe Saul’s troubled spirit. Later he was forced to flee from Saul when Saul tried to kill him. After David assumed the throne of Israel, he fought a number of battles and established Israel as the dominant power in the region.
Still later, David committed adultery with Bathsheba and arranged for her husband’s death. After he repented, David made preparations to build a new temple to replace the tent that housed the ark of the covenant, although it was actually his son Solomon who built the temple. All the while, David composed psalms expressing his love for God and calling on God to rescue him from his enemies.
So was God’s highest praise of David about one of David’s many accomplishments? Or about his skillful composition of praise songs? No.
It was simply that David was “a man after [God’s] own heart” (1 Samuel 13:14). That is what made David truly great in the eyes of God.
As we strive to honor God in life, what should be our highest aspiration? That we accomplish great things for God? That we live a godly life? Certainly these are noble goals. But ultimately our chief concern should be that we seek to have a heart that reflects the heart of God. No other praise could be greater.