17 But the first-born, son of the hated one, he doth acknowledge, to give to him a double portion of all that is found with him, for he is the beginning of his strength; to him is the right of the first-born.
Deuteronomy 21:17 Cross References - YLT
Genesis 25:5-6
Genesis 25:31-34
31 and Jacob saith, `Sell to-day thy birthright to me.'
32 And Esau saith, `Lo, I am going to die, and what is this to me—birthright?'
33 and Jacob saith, `Swear to me to-day:' and he sweareth to him, and selleth his birthright to Jacob;
34 and Jacob hath given to Esau bread and pottage of lentiles, and he eateth, and drinketh, and riseth, and goeth; and Esau despiseth the birthright.
Genesis 49:3
3 Reuben! my first-born thou, My power, and beginning of my strength, The abundance of exaltation, And the abundance of strength;
1 Chronicles 5:1-2
1 As to sons of Reuben, first-born of Israel—for he is the first-born, and on account of his profaning the couch of his father hath his birthright been given to the sons of Joseph son of Israel, and he is not to be reckoned by genealogy for the birthright,
2 for Judah hath been mighty over his brother, and for leader above him, and the birthright is to Joseph.
Psalms 105:36
36 And He smiteth every first-born in their land, The first-fruit of all their strength,