He was forty years old when he was made king of Israel, and he ruled for two years. But the tribe of Judah was loyal to David,

and Saul ordered them to tell David: "All the king wants from you as payment for the bride are the foreskins of a hundred dead Philistines, as revenge on his enemies." (This was how Saul planned to have David killed by the Philistines.)

David and his men went and killed two hundred Philistines. He took their foreskins to the king and counted them all out to him, so that he might become his son-in-law. So Saul had to give his daughter Michal in marriage to David.