Genesis 35:23

35:23 The sons of Leah were Reuben, Jacob’s firstborn, as well as Simeon, Levi, Judah, Issachar, and Zebulun.

Genesis 37:21

37:21 When Reuben heard this, he rescued Joseph from their hands, saying, “Let’s not take his life!”

Genesis 37:29

37:29 Later Reuben returned to the cistern to find that Joseph was not in it! He tore his clothes,

Genesis 49:3

49:3 Reuben, you are my firstborn,

my might and the beginning of my strength,

outstanding in dignity, outstanding in power.