Joshua 1:3

Moses. Thus the preceding permission, which the Jews extend, as if God had authorized them to conquer the whole world, is limited. (Haydock) See Deuteronomy xi. 24. --- Their right to the land of Chanaan depends on this grant of God, who is the Lord of all things, and who thus took away all the privileges of the former inhabitants. But the warrant of destruction only regarded the people of Chanaan. Those who lived towards the Euphrates, were obliged only to pay tribute by David and Solomon, thought their country formed part of what had been promised to the Israelites. They might have possessed all that region, if they had proved faithful. The limits of the promised land vary, as they are considered under various lights. (Calmet) --- The desert of Arabia Petrea and Antilibanus formed the boundaries on the south and on the north, the Euphrates and Mediterranean were on the east and west, when the territories of the Israelites were considered in their utmost extent. (Haydock)