What does Exodus 1:3 mean?

At the end of the book of Genesis, the nation of Israel had settled in Egypt. The early verses of the book of Exodus explain their history from that point on. The fifth through seventh sons of Jacob are noted in this verse. Issachar was Jacob and Leah's fifth son together (Genesis 30:17–18). He was considered a "strong donkey" (Genesis 49:14). Zebulun was the sixth son of Jacob and Leah (Genesis 30:20). Jacob predicted he would "dwell at the shore of the sea; he shall become a haven for ships, and his border shall be at Sidon" (Genesis 49:13).

Benjamin was the second son of Jacob and Rachel following Joseph. Rachel died while giving birth to Benajmin (Genesis 35:16–19). He was the youngest of Jacob's twelve sons and was carefully guarded by his father (Genesis 42:4). In fact, Benjamin means "son of my right hand." Benjamin did not travel to Egypt with his brothers during their first trip. Instead, Benjamin came on the second trip (Genesis 42:34) when Joseph revealed his identity to his brothers.