‘The sons of Leah: Reuben, Jacob's firstborn, and Simeon, and Levi, and Judah, and Issachar, and Zebulun. The sons of Rachel: Joseph and Benjamin. And the sons of Zilpah, Rachel's handmaid: Dan and Naphtali. And the sons of Zilpah, Leah's handmaid: Gad and Asher. These were the sons of Jacob which were born to him in Paddan-aram.'
“Born to him in Paddan-aram.” That is all but Benjamin. But the idea is rather that they were all born prior to his full return to the tribe after being sent to Paddan-aram. The writer views it as one seeing them all return home ‘from Paddan-aram'.