1 Samuel 17:52-54

52Now the men of Israel and Judah arose and shouted, and pursued the Philistines as far as the entrance of the valley and to the gates of Ekron. And the wounded of the Philistines fell along the road to Shaaraim, even as far as Gath and Ekron.

53Then the children of Israel returned from chasing the Philistines, and they plundered their tents.

54And David took the head of the Philistine and brought it to Jerusalem, but he put his armor in his tent.