John Wesley on Joshua 1:4

This Lebanon - Emphatically, as being the most eminent mountain in Syria, and the northern border of the land: or this which is within thy view. Hittites - Of the Canaanites, who elsewhere are all called Amorites; (Gen 15:16) and here Hittites, the Hittites being the most considerable and formidable of all. The greater - The midland sea, great in itself, and especially compared with those lesser collections of waters, which the Jews called seas. "But the Israelites never possessed all this land." I answer: That was from their own sloth and cowardice, and disobedience to God, and breach of those conditions upon which this promise was suspended: Though their possessions extended not to Euphrates, yet their dominion did, and all those lands were tributary to them in David's and Solomon's time.