Genesis 48:5

5And now your atwo sons, who were born to you in the land of Egypt before I came to you in Egypt, bare mine; Ephraim and Manasseh shall be mine, as Reuben and Simeon are.

Genesis 48:22

22Moreover, I have given to cyou rather than to your brothers one mountain slope
Or  one portion of the land; Hebrew shekem, which sounds like the town and district called Shechem
that I took from the hand of the Amorites with my sword and with my bow.”

Deuteronomy 21:17

17but he shall acknowledge the firstborn, the son of the unloved, by giving him a double portion of all that he has, for he is ethe firstfruits of his strength. fThe right of the firstborn is his.

Copyright information for ESV