'First born' in the Bible
And the first-born said to the younger, Our father is old, and there is not a man on the earth to come in to us after the manner of all the earth:
And they made their father drink wine that night: and the first-born went in and lay with her father; and he perceived not when she lay down, nor when she arose.
And it came to pass on the morrow that the first born said to the younger, Behold, I lay yesternight with my father; let us make him drink wine this night also; and go thou in, and lie with him, that we may preserve seed of our father.
And the first-born bore a son, and called his name Moab: the same is the father of the Moabites to this day.
Huz his first-born, and Buz his brother, and Kemuel the father of Aram,
And these are the names of the sons of Ishmael, by their names, according to their generations: The first-born of Ishmael, Nebajoth; and Kedar, and Adbeel, and Mibsam,
And Jacob said to his father, I am Esau thy first-born; I have done according as thou badest me: arise, I pray thee, sit and eat of my venison, that thy soul may bless me.
And Isaac his father said to him, Who art thou? And he said, I am thy son, thy first-born Esau.
And Laban said, it must not be so done in our country, to give the younger before the first-born.
The sons of Leah; Reuben, Jacob's first-born, and Simeon, and Levi, and Judah, and Issachar, and Zebulun:
These were dukes of the sons of Esau: the sons of Eliphaz the first-born son of Esau; duke Teman, duke Omar, duke Zepho, duke Kenaz,
And Judah took a wife for Er his first-born, whose name was Tamar.
And Er, Judah's first-born, was wicked in the sight of the LORD; and the LORD slew him.
And Joseph called the name of the first-born Manasseh: For God, said he, hath made me forget all my toil, and all my father's house.
And they sat before him, the first-born according to his birth-right, and the youngest according to his youth: and the men wondered one at another.
And these are the names of the children of Israel, who came into Egypt, Jacob and his sons: Reuben, Jacob's first-born.
And Israel stretched out his right hand, and laid it upon Ephraim's head, who was the younger, and his left hand upon Manasseh's head, guiding his hands by design; for Manasseh was the first-born.
And Joseph said to his father, Not so, my father; for this is the first-born; put thy right hand upon his head.
Reuben, thou art my first-born, my might, and the beginning of my strength, the excellence of dignity, and the excellence of power: