ACHISH (ā'kĭsh, Heb. ’ākhîsh). King of Gath, to whom David fled for protection (1Sam.21.10-1Sam.21.15). David became fearful and pretended insanity. Achish repulsed him, and David fled. David again sought refuge with Achish, this time behaving so as to win his confidence (1Sam.27.1-1Sam.27.12). David consented to join Achish against Israel, but when the Philistine lords objected, Achish sent David away (1Sam.29.1-1Sam.29.11). He may be the same Achish to whom Shimei’s servant fled (1Kgs.2.39-1Kgs.2.40). Achish is called Abimelech in the title to Ps.34.1-Ps.34.22. Gen.20.2, 22; Gen.26.1, Gen.26.26 suggest that Abimelech was a dynastic name of Philistine kings.