It is thought he was about 15-17 years of age.
No it is not so, king saul tried to kill David.
He wanted to kill David (1 Samuel ch.20).See also the Related Links.Link: Why did Saul turn against David?Link: Why didn't David kill Saul?
saul looked forward to the day when david would take over his reign as king of the israerlites
Saul wanted to kill David, as he saw that David was getting more popular each day.
11 1 Sam. 18:11 - Saul attempts with a spear. 1 Sam. 18:17,21 - Saul plots such that his enemies are to do away with David using his older daughter and then younger as David goes to battle w/ the Philistines. Being heir to the throne would make David a prime target. 1 Sam. 19:1 - servants ordered by Saul to kill David. 1 Sam. 19:10 - Saul attempts with spear 1 Sam. 19:11 - Saul sends messengers to kill David. 1 Sam. 19:15 - Saul sends messengers to bring David back so he can kill David. 1 Sam. 19:20 - Saul sends messengers to kill David. 1 Sam. 19:21 - Saul sends messengers again. (third time) 1 Sam. 19:22 - Saul goes himself in an attempt. 1 Sam. 23:15 - Saul sought David in the wilderness of Ziph and Horesh. 1 Sam. 26:2 - Saul seeks David again in Ziph.
God protected David from Saul's attempts to harm him, providing him with wisdom to navigate dangerous situations and securing his safety. God also reassured David of his presence and faithfulness, giving him the strength to endure the challenges he faced.
1Sam:18:8: And Saul was very wroth, and the saying displeased him; and he said, They have ascribed unto David ten thousands, and to me they have ascribed but thousands: and what can he have more but the kingdom? 1Sam:18:9: And Saul eyed David from that day and forward. Saul feared David had become more popular than him. He was already paranoid that someone would take the kingdom from him as the Lord, through the prophet Samuel had foretold.
Traditional chronology states that David was fleeing from Saul for about one-and-one-half years. See also:More about King DavidWhy didn't David kill Saul?
Jonathan helped David by warning him of King Saul's intentions to kill him, providing him with resources and support to escape, and advocating on his behalf to try to reconcile David with King Saul. Jonathan also affirmed his friendship and loyalty to David, despite the circumstances.
I Samuel 18:11. David got the clue after this incident!
Saul seemed to realize that God had chosen David as his replacement, but contrary to Saul's belief David never planned any sort of rebellion, only fleeing from Saul when he attacked. In fact, on two occasions David had a chance to kill Saul (once when he was sleeping, once when they were in a dark cave where Saul could not see him) but refused, claiming that Saul was still God's anointed and thus inviolable. When Saul was killed by an Amalekite David had the perpetrator killed.
Because king Saul was jealous and wanted to kill him.