David was quite aware that there were flatterers at Saul’s court who were continually inflaming the King’s mind by their false accusations against him. This explains the language of many of the Psalms, e. g. Psalms 10; Psalms 11:1-7; Psalms 12:1-8; Psalms 35; and many more.
Related Commentaries of 1 Samuel 24:9
1 Samuel 24:9
9 And David said to Saul, Wherefore hearest thou men's words, saying, Behold, David seeketh thy hurt?