God's Foreseen King

What did it mean when God provided a king for Israel? What was God reminding Samuel of by requiring the sacrifice? What is it that the LORD sees when He looks upon a man? How is David being a shepherd and a king a type of Christ? What does the title Christ mean? What does God's fore-knowledge mean? How do men explain God's foreknowledge backwards? How does God fore-ordain all things? Why do people balk at God's sovereignty having predetermined all things according to His will? How does a god that constantly changes give away a false religion?