1 Samuel 24:9 - Ellicott's Commentary On The Whole Bible

Wherefore hearest thou men’s words? — David had many deadly enemies at the court of Saul, who evidently laboured with success to deepen Saul’s jealousy, and to widen the breach which already existed between the king and David. Doeg has been already mentioned as one of the more prominent of these slanderers; another was Cush the Benjamite, who was alluded to in the inscription which heads the seventh Psalm. The Ziphites and their representatives at the royal residence also belonged to this class of malicious foes spoken of here.