Numbers 1:20

New International Version

From the descendants of Reuben the firstborn son of Israel: All the men twenty years old or more who were able to serve in the army were listed by name, one by one, according to the records of their clans and families.

Cross References

Genesis 29:32

Leah became pregnant and gave birth to a son. She named him Reuben, for she said, “It is because the Lord has seen my misery. Surely my husband will love me now.”

Genesis 35:23

The sons of Leah: Reuben the firstborn of Jacob, Simeon, Levi, Judah, Issachar and Zebulun.

Genesis 46:9

The sons of Reuben: Hanok, Pallu, Hezron and Karmi.

1 Chronicles 5:1

The sons of Reuben the firstborn of Israel (he was the firstborn, but when he defiled his father’s marriage bed, his rights as firstborn were given to the sons of Joseph son of Israel; so he could not be listed in the genealogical record in accordance with his birthright,

Numbers 1:21

The number from the tribe of Reuben was 46,500.