Genesis 29:32-35 records the births of Leah's first four sons in order — the same order listed here as Reuben, Simeon, Levi, Judah.

In Genesis 30:18-20, Leah bears Issachar and Zebulun — the remaining two sons listed after Judah here.

Genesis 46:8-15 lists Jacob's descendants entering Egypt — the same sons catalogued here, providing the fuller census Reuben heads as firstborn.

Genesis 29:33 explains why Leah named her second son Simeon — 'heard' by the LORD — connecting to his place in this birth-order list.

Genesis 29:34 records Leah's hope that Jacob would 'attach' to her, naming Levi — the third son listed here in the same birth order.

In Genesis 30:20, Leah names Zebulun hoping Jacob will honor her — the sixth and final son of Leah listed here.

In Genesis 46:15, Jacob's family going to Egypt is counted — Leah and Zilpah's sons plus grandchildren total 33, expanding on this same list.

Genesis 29:16 names Laban's daughters Leah and Rachel — Leah being the mother of all six sons listed here.

In Exodus 1:1, these same twelve sons by name are re-listed as the narrative shifts from Canaan to Egypt.

1 Chronicles 5:2 highlights Judah and Joseph from this list, explaining that though Judah became leader, Joseph held the birthright.

Revelation 7:7 names Simeon, Levi, and Issachar among the sealed 144,000 — tribal names tracing back to these sons of Jacob.