In 1 Samuel 17:25 it says: And the men of Israel said: 'Have ye seen this man that is come up? surely to taunt Israel is he come up; and it shall be, that the man who killeth him, the king will ...
The story of David in short, as requested: Shmuel (Samuel) anoints Shaul (Saul) king of Israel at G-d's command. (Shmuel I 10:1 and ibid. v 24) Shaul disobeys G-d, and G-d regrets his ...