Genesis 48:1, 5

One day not long after this, word came to Joseph, “Your father is failing rapidly.” So Joseph went to visit his father, and he took with him his two sons, Manasseh and Ephraim.

“Now I am claiming as my own sons these two boys of yours, Ephraim and Manasseh, who were born here in the land of Egypt before I arrived. They will be my sons, just as Reuben and Simeon are.