Genesis 30:20 recounts Leah's naming of Zebulun, providing the meaning behind the tribal name listed here.

Genesis 49:13 gives Jacob's blessing on Zebulun, describing the tribe's future territory and role.

Numbers 26:26 lists the same three sons of Zebulun (Sered, Elon, Jahleel) as the clans of the tribe, confirming the genealogy.

Numbers 26:27 gives the census total for these same three clans of Zebulun — directly based on the sons listed here.