Deuteronomy 1:8

Behold, I have set the land before you
Described it to them, and set its bounds, as well as had given them a grant of it:

go in and possess the land, which the Lord sware unto your fathers,
Abraham, Isaac, and Jacob, to give unto them and their seed after them:
and which being thus made sure unto them, they had nothing more to do than to go and take possession of it.