Genesis 13:5-7 meaning

Lot…also had flocks and herds and tents. Wealth of the day was measured largely by the number of animals one owned. Like Abram, Lot also had accumulated much wealth.

The land could not sustain them, the blessing of God creates a challenge for Abram and Lot. Livestock made up the greater part of their possessions, and the land around Bethel and Ai did not have enough water and pasture for such large flocks and herds (Genesis 13:10, 26:17-22, 32, 36:7).

There was strife between the herdsmen of Abram's livestock and the herdsmen of Lot's livestock; the herdsmen quarreled over pasture land for their flocks due to inadequate space. The existing population also made demand on the good pastureland, as the Canaanite and the Perizzite were dwelling then in the land. Disputes over water and grazing rights were common for the patriarchs, so they developed migratory nomadic lifestyles. Similar challenges faced Isaac and the Philistines (Genesis 26:12-22), Jacob and his uncle Laban (Genesis 30:43), and Jacob and Esau (Genesis 36:6-7).

Abram's grandson Jacob (renamed Israel) will return to Egypt due to a famine, as his grandfather Abram did. They will exit Egypt a great nation. This episode between Abram and Lot points out the difficulty of Abram's family becoming a great nation if they had remained in Canaan grazing livestock. Their company likely numbers in the hundreds at this point, but they still suffer a lack of space for their livestock. God used a negative situation in Egypt to create something very positive. In Egypt the Hebrews lived in close proximity, which was allowed by the fertile river culture. This allowed them to become a great and populous nation, as God promised to Abram (Genesis 12:2, 13:16, 15:5).