Then came up the Ziphites to Saul to Gibeah, saying, Doesn't David hide himself with us in the strongholds in the wood, in the hill of Hachilah, which is on the south of the desert?
Evidently the Ziphites thought that they would be better off if they informed Saul of David’s presence in their area than if the king discovered that he was there. He might have blamed them for sheltering David and taken revenge on them as he had on the people of Nob.