1 Samuel 26: The Lords Annointed

So David and Abishai went to the army by night, and there was Saul, lying asleep inside the camp with his spear stuck in the ground near his head. Abner and the soldiers were lying around him.
Abishai said to David, “Today God has delivered your enemy into your hands. Now let me pin him to the ground with one thrust of my spear; I won’t strike him twice.”
But David said to Abishai, “Don’t destroy him! Who can lay a hand on the LORD’s anointed and be guiltless? As surely as the LORD lives,” he said, “the LORD himself will strike him; either his time will come and he will die, or he will go into battle and perish. But the LORD forbid that I should lay a hand on the LORD’s anointed. Now get the spear and water jug that are near his head, and let’s go.”
So David took the spear and water jug near Saul’s head, and they left. No one saw or knew about it, nor did anyone wake up. They were all sleeping, because the LORD had put them into a deep sleep. 1 Sam. 26:7-12 NIV

Why did God choose Saul rather than David to be the first king of Israel.  The people asked or a king and that's what they got, one that was chosen and anointed by God, but who curiously, let power go to his head.  Is that the end of all power?  It always goes to the ruler's head.  Even, David succumbed to the power of the position.  It turns out that those that God chooses to be the anointed ones are not necessarily the ones that follow the most closely after him.  A lot of times, God chooses the worst possible person to be the anointed one for two reasons:  to give the people what they want and give them what they deserve.  Ungodly kings for ungodly people. 

Instead of railing against the king, David chose to let events run their course.  He was confident that God was in control and God's timing and nothing else would be the end of Saul.  He was the Lord's anointed.