Matthew Henry Commentary Genesis 13:14-18

"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: for all the land which thou seest, to thee will I give it, and to thy seed for ever. And I will make thy seed as the dust of the earth: So that if a man can number the dust of the earth, then may thy seed also be numbered. Arise, walk through the land in the length of it and in the breadth of it; for unto thee will I give it. And Abram moved his tent, and came and dwelt by the oaks of Mamre, which are in Hebron, and built there an altar unto Jehovah." — Genesis 13:14-18 (ASV)

Those are best prepared for the visits of Divine grace whose spirits are calm and not ruffled with passion. God will abundantly make up in spiritual peace what we lose for preserving neighborly peace. When our relations are separated from us, yet God is not.

Observe also the promises with which God now comforted and enriched Abram. Of two things he assures him: a good land, and numerous descendants to enjoy it. The prospects seen by faith are more rich and beautiful than those we see around us. God instructed him to walk through the land, not to think of settling in it, but to expect to be always unsettled, and walking through it to a better Canaan.

He built an altar as a sign of his thankfulness to God. When God meets us with gracious promises, he expects that we should offer him humble praises. In outward difficulties, it is very profitable for the true believer to meditate on the glorious inheritance which the Lord has for him in the end.