Charles Ellicott Commentary Genesis 13:14

"And Jehovah 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:" — Genesis 13:14 (ASV)

The Lord said to Abram. —The departure of Lot was certainly a great grief to Abram, for by this he lost the companionship of the relative who had shared his abandonment of his country, and whom, probably, in his childless state, he had regarded as his heir. Jehovah, therefore, consoles him with a more definite promise of the possession of the whole land of which he had so generously given Lot the choice, and by the assurance that his own seed would be as numerous as the dust of the earth. We may also feel sure that as Lot was deteriorating, Abram was drawing nearer to God and walking more closely with Him; and so the fuller assurance of the Divine blessing.