What did God promise Abraham about the land after Lot separated from him?
After Lot separated from him, God told Abraham to look north, south, east, and west, promising all the land he saw to him and his seed forever. God also promised to make his seed as the dust of the earth and told him to walk through the land, for it would be given to him. This was an earthly promise.
Les explains that Genesis 13 records the promise after Lot was separated from Abraham: the Lord told him to lift up his eyes and look from the place where he was—northward, southward, eastward, and westward. All the land he could see, God promised to give to him and to his seed forever. God also promised to make his seed as the dust of the earth, so that if a man could number the dust, his seed could also be numbered. Then God told him to arise and walk through the land, its length and breadth, for God would give it to him. Les emphasizes this was not a heavenly promise but an earthly one—a geographical area of land on the eastern end of the Mediterranean—and that Abraham's descendants would be multiplied as the sand of the sea: people, not angels.
And the LORD said unto Abram, after that Lot was separated from him, Lift up now thine eyes, and look from the place where thou art northward, and southward, and eastward, and westward:
For all the land which thou seest, to thee will I give it, and to thy seed for ever.