Genesis 48:6
And thy issue, which thou begettest after them, shall be thine, and shall be called after the name of their brethren in their inheritance. And thy issue, which thou begettest after them, shall be thine, and shall be called after the name of their brethren in their inheritance.
Genesis 48:6 belongs to the history of the seven years of famine, when Joseph was ruler in Egypt. In that famine Jacob's ten sons came from Canaan to Egypt to buy grain. When they came they bowed down before Joseph without knowing him.