Numbers 26:28
The sons of Joseph after their families: Manasseh and Ephraim.
Genesis 46:20
To Joseph in the land of Egypt were born Manasseh and Ephraim, whom Asenath, the daughter of Potiphera, priest of On, bore to him.
Genesis 41:51-52
Joseph called the name of the firstborn Manasseh, "For," he said, "God has made me forget all my toil, and all my father's house."
Genesis 48:5
Now your two sons, who were born to you in the land of Egypt before I came to you into Egypt, are mine; Ephraim and Manasseh, even as Reuben and Simeon, will be mine.
Genesis 48:13-20
Joseph took them both, Ephraim in his right hand toward Israel's left hand, and Manasseh in his left hand toward Israel's right hand, and brought them near to him.