Joshua 23:4

“Behold, I have divided to you by lot these nations that remain, etc.] Who are unsubdued, not yet conquered, as well as those that are to be an inheritance for your tribes; to be possessed by them and their children for ever: from Jordan, with all the nations I have cut off, even unto the great sea westward; the phrase, “with all the nations I have cut off”, is to be read in connection with “those nations that remain”; both those that were cut off by the sword of Joshua, and those that remained unconquered, being divided by lot to the tribes of Israel; and which reached from Jordan eastward, where Joshua and Israel entered into the land, to the Mediterranean sea, called the great sea in…”

“That remain - Not yet conquered. An inheritance - You shall certainly subdue them, and inherit their hand, as you have done the rest, if you be not wanting to yourselves. All the nations - That is, with the land of those nations; the people put for their land, as we have seen before; and as sometimes on the contrary, the land is put for the people. The great sea - Where the Philistines, your most formidable adversaries yet survive; but them also and their land I have given to you, and you shall undoubtedly destroy them, if you will proceed vigorously in your work. Joshua 23:6”

“23:4-5 Some of the land that Joshua had assigned to the various tribes remained unconquered. Israel’s gradual occupation of the land had an ecological reason (see Exod 23:29-30), a military reason (see Judg 1:19), and a theological reason (see Judg 2:20–3:4). Israel’s ensuing unfaithfulness delayed the settlement process by several centuries; instead of driving out the remaining Canaanites, Israel absorbed them, bringing God’s people even greater temptations to unfaithfulness. Joshua knew this to be a real danger (Josh 23:15-16).”

“Behold: Jos 13:2, Jos 13:6, Jos 13:7, Jos 18:10 westward: Heb. at the sunset Joshua 23:5”