B'resheet 13:1 So Abram went up from Egypt to the Negev, he and his wife and all that belonged to him; and Lot with him.
The Negev - The south of Israel, a desert land.
That belonged to him - servants and animals - This was no small group.
B'resheet 13:2 Now Abram was very rich in livestock, in silver and in gold.
His wealth was divested in three areas: livestock, silver, and gold. Livestock was a very important commodity in Abraham's day. It was used for food, clothing, sacrifices, and could be traded for other goods, gold, and silver.
B'resheet 13:3-4 And 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, to the place of the altar, which he had made there formerly; and there Abram called on the name of the L-RD.
He returned to the first place that he came to in Promised Land. Egypt sometimes represents "sin" in the Bible. Sometimes when one went down to Egypt from Israel it was symbolic of them leaving G-d and going away from Him and into sin. Abram actions in Egypt left a little something to be desired. Now he is back in the Promised Land and back in fellowship with HaShem. (We do not mean this to be an attack on the people of Egypt. The Egyptian people that we have met in our travels were friendly and hospitable.)
B'resheet 13:5-7 Now Lot, who went with Abram, also had flocks and herds and tents. And the land could not sustain them while dwelling together; for their possessions were so great that they were not able to remain together. 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.
Lot became wealthy too.
The Canaanite and the Perizzite were dwelling then in the land - Remember that the Canaanites were the line cursed by Noach. Instead of the fighting going on between Abram and Lots servants, they should have been banding together to drive the Canaanites and the Perizzites out of the land. The same thing is true today. The children of HaShem often fight among themselves when they should be fighting a common enemy HaSatan.
Notice too that it was not the Palestinians that were in the land before Abraham. It was the Canaanites.
B'resheet 13:8-10 Then 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. 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." And Lot lifted up his eyes and saw all the valley of the Jordan, that it was well watered everywhere-- this was before the L-RD destroyed Sodom and Gomorrah-- like the garden of the L-RD, like the land of Egypt as you go to Zoar.
Zoar - a town at the south end of the Dead Sea. The name means "a small place". We well see this town mentioned again when we study chapter 19. The wording is a little misleading as to where Zoar is located. Zoar is not in Egypt, as some translations lead you to believe.
B'resheet 13:10 And Lot lifted up his eyes, and beheld all the plain of Jordan, that it was well watered every where, before the L-RD destroyed Sodom and Gomorrah, even as the garden of the L-RD, like the land of Egypt, as thou comest unto Zoar. KJV
Let's ignore, for a moment, part of the sentence. I will change the commas to parenthesis; I think it will be easier to see.
B'resheet 13:10 And Lot lifted up his eyes, and beheld all the plain of Jordan, that it was well watered every where (, before the L-RD destroyed Sodom and Gomorrah, even as the garden of the L-RD, like the land of Egypt,) as thou comest unto Zoar. KJV
See it is the plain of Jordan that is well watered all the way down to the town of Zoar.
This was before the L-RD destroyed Sodom and Gomorrah - Moshe was writing hundreds of years after Sodom and Gomorrah were destroyed.
Abram put great importance on keeping peace in the family. Abram was a humble person and permitted Lot to have his choice of the better land. It would not matter, Adonai said He would bless Abram and bless all the nations through Him. This was not only physically but also spiritually.