5. inhabitants of the seacoast—the Philistines dwelling on the strip of seacoast southwest of Canaan. Literally, the "cord" or "line" of sea (compare Jer 47:7; Eze 25:16).
the Cherethites—the Cretans, a name applied to the Philistines as sprung from Crete (De 2:23; Jer 47:4; Am 9:7). Philistine means "an emigrant."
Canaan … land of the Philistines—They occupied the southwest of Canaan (Jos 13:2, 3); a name which hints that they are doomed to the same destruction as the early occupants of the land.