What does Genesis 13:5 mean?

Abram left Egypt as a wealthy man, with a large entourage. This company included his wife, his nephew Lot, various kinds of livestock, other animals, and male and female servants. Together, they had traversed from Egypt north all the way to the heart of Canaan, arriving at Bethel and the altar to the Lord Abram had previous built.

Here we learn that Lot also had his own wealth, including flocks and herds and tents. In the following verses, we'll learn that Lot was, in fact, very affluent in his own right. It's unclear how much of this property Lot entered into Canaan with and how much he might have picked up in Egypt. What is clear is that God was abundantly blessing Abram and all who were with him.

As it turns out, these blessings will set up the narrative of next few chapters. Abram and Lot will need to separate in order for their families to thrive. This leads Lot into several incidents of trouble, where he has to be rescued.