Then the Ziphites came up to Saul at Gibeah and said, “Is not David hiding among us in the strongholds at Horesh, on the hill of Hachilah south of Jeshimon?
Here, 1. The Ziphites offer their service to Saul, to betray David to him, Sa1 23:19, Sa1 23:20. He was sheltering himself in the wilderness of Ziph (Sa1 23:14, Sa1 23:15), putting the more confidence in the people of that country because they were of his own tribe.
Commenting on 1 Samuel 23:19-29
Then came up the Ziphites to Saul to Gibeah,.... Who though he had been out in quest of David, yet was now returned to Gibeah, the place of his residence, and where he kept his court; and hither came the Ziphites, the inhabitants of Ziph, in the wilderness of which David hid himself, with a proposal to deliver him to Saul; for though they were...
SAUL PURSUES HIM. (Sa1 23:19-29) Then came up the Ziphites to Saul to Gibeah, saying, Doth not David hide himself with us?--From the tell of Ziph a panorama of the whole surrounding district is to be seen. No wonder, then, that the Ziphites saw David and his men passing to and fro in the mountains of the wilderness.