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 (Deu 2:23; Jer 47:4; Amo 9:7). Philistine means “an emigrant.”
Canaan ... land of the Philistines - They occupied the southwest of Canaan (Jos 13:2, Jos 13:3); a name which hints that they are doomed to the same destruction as the early occupants of the land.