1 So Abram went up from Egypt to the Negev, he and his wife and all that belonged to him, and Lot with him. 2 Now Abram was very rich in livestock, in silver and in gold. 3 He went on his journeys from the Negev as far as Bethel, to the place where his tent had been at the beginning, between Bethel and Ai, 4 to the place of the altar which he had made there formerly; and there Abram called on the name of the LORD. Genesis 13:1–4 (NASB95) 

1 Abram went up from Egypt, he and his wife and all his things, and Lot with him, into the wilderness. 2 Abram was very rich in livestock and in silver and in gold. 3 And he went from where he had come into the wilderness to Bethel, as far as the place where his tent had been before, between Bethel and Ai, 4 to the place of the altar, where he pitched his tent. And there Abram invoked the name of the Lord. Genesis 13:1–4 (LES2) 

5 Now Lot, who went with Abram, also had flocks and herds and tents. 6 And the land could not sustain them while dwelling together, for their possessions were so great that they were not able to remain together. 7 And there was strife between the herdsmen of Abram’s livestock and the herdsmen of Lot’s livestock. Now the Canaanite and the Perizzite were dwelling then in the land. Genesis 13:5–7 (NASB95) 

5 And sheep and oxen and livestock belonged to Lot, who came along with Abram. 6 And the land did not have room for them to live together because their possessions were abundant, so they were not able to live together. 7 And a fight took place between the herdsmen of Abram’s livestock and the herdsmen of Lot’s livestock. Now the Canaanites and the Perizzites were residing in the land at that time. Genesis 13:5–7 (LES2) 

8 So Abram said to Lot, “Please let there be no strife between you and me, nor between my herdsmen and your herdsmen, for we are brothers. 9 “Is not the whole land before you? Please separate from me; if to the left, then I will go to the right; or if to the right, then I will go to the left.” Genesis 13:8–9 (NASB95) 

8 And Abram said to Lot, “Let there be no contention between me and you and between your herdsmen and my herdsmen, because we are brothers. 9 For look at the whole land before you! Part company with me; if you go to the left, I will go to the right; but if you go right, I will go left.” Genesis 13:8–9 (LES2)

10 Lot lifted up his eyes and saw all the valley of the Jordan, that it was well watered everywhere—this was before the LORD destroyed Sodom and Gomorrah—like the garden of the LORD, like the land of Egypt as you go to Zoar. 11 So Lot chose for himself all the valley of the Jordan, and Lot journeyed eastward. Thus they separated from each other. 12 Abram settled in the land of Canaan, while Lot settled in the cities of the valley, and moved his tents as far as Sodom. 13 Now the men of Sodom were wicked exceedingly and sinners against the LORD. Genesis 13:10–13 (NASB95) 

10 And when Lot raised his eyes, he saw all the country round about the Jordan that all was watered (before God overthrew Sodom and Gomorrah) like the garden of God and like the land of Egypt up to Zoar. 11 And Lot chose all the country round about the Jordan for himself, and Lot departed from the east, and they each parted ways from their brother. 12 Abram settled in the land of Canaan, but Lot settled in a city of the surrounding region and pitched his tent in Sodom. 13 The people who were in Sodom were very evil and sinful before God. Genesis 13:10–13 (LES2) 

14 The LORD said to Abram, after Lot had separated from him, “Now lift up your eyes and look from the place where you are, northward and southward and eastward and westward; 15 for all the land which you see, I will give it to you and to your descendants forever. 16 “I will make your descendants as the dust of the earth, so that if anyone can number the dust of the earth, then your descendants can also be numbered. 17 “Arise, walk about the land through its length and breadth; for I will give it to you.” Genesis 13:14–17 (NASB95) 

14 God said to Abram (after Lot parted ways with him), “Look up with your eyes and look, from the place where you are now to the north and the south and the east and the sea, 15 because I will give you and your offspring all the land that you see, forever. 16 And I will make your offspring like the sand of the earth. If anyone can count the sand of the earth, then your offspring will also be counted. 17 Get up and travel through the length and breadth of the land, because I will give it to you and to your offspring forever.” Genesis 13:14–17 (LES2) 

In verse 14 there is more evidence that the LXX is more literal than the MT. It uses the word “sea” for “west.” The Mediterranean Sea is west of the land of Canaan.

Verse 15 is a proof text for Zionists, but it is very important to remember that the word translated “descendants” in both Hebrew and Greek is singular and means “seed.” Paul taught that the promised seed is Christ (Galatians 3:16), to whom the land (earth) now belongs as a permanent possession. To assign it to the nation state of modern Israel is a misunderstanding of the New Covenant and dishonors Christ. 

The multitude of descendants in the New Covenant is the elect, those born of the Spirit, both Jew and Gentile. (Galatians 3:28, 1 Peter 2:9-10)

In addition, the New Covenant gives the entire earth to Christ and the church, not just a sliver of land in the Near East. (Romans 4:13, Matthew 5:5)

18 Then Abram moved his tent and came and dwelt by the oaks of Mamre, which are in Hebron, and there he built an altar to the LORD. Genesis 13:18 (NASB95) 

18 And, after decamping, Abram, went and settled beside the oak of Mamre, which was in Hebron, and he built an altar for the Lord there. Genesis 13:18 (LES2) 

The passage agrees in essence. Abram built an altar to God, which apparently Lot never did.