Genesis 30:20

30:20 Then Leah said, “God has given me a good gift. Now my husband will honor me because I have given him six sons.” So she named him Zebulun.

Genesis 31:41

31:41 This was my lot for twenty years in your house: I worked like a slave for you – fourteen years for your two daughters and six years for your flocks, but you changed my wages ten times!