So he blessed them that day, saying, "By you Israel will bless, saying, "May God make you as Ephraim and as Manasseh!"' And thus he set Ephraim before Manasseh.
Genesis 48:20
Surrounding context
48:19 But his father refused and said, "I know, my son, I know. He also shall become a people, and he also shall be great; but truly his younger brother shall be greater than he, and his descendants shall become a multitude of nations."
48:20 So he blessed them that day, saying, "By you Israel will bless, saying, "May God make you as Ephraim and as Manasseh!"' And thus he set Ephraim before Manasseh.
48:21 Then Israel said to Joseph, "Behold, I am dying, but God will be with you and bring you back to the land of your fathers.