When the Philistines heard that David had been made king over Israel, all the Philistines went to look for him. But when David heard the news, he went down to the stronghold.
Later, at Gezer, war broke out with the Philistines. Sibbecai the Hushathite killed Sippai, who was one of the descendants of the Rephaites. So those Philistines were defeated.