'First born' in the Bible

And the sons of Reuben, the firstborn of Israel, shall be their generations, according to their families, according to the house of their fathers, according to the number of names, according to their heads, every male from the son of twenty years and above, all going forth to war.

And these the names of the sons of Aaron: the first-born Nadab, and Abihu, and Eleazar and Ithamar.

And I, behold, I took the Levites from the midst of the sons of Israel, instead of all the first-born cleaving the womb from the sons of Israel: and the Levites were to me.

For to me all the first-born: in the day I struck all the first-born in the land of Egypt, I consecrated to me every first-born in Israel, from man to cattle: to me they shall be: I am Jehovah.

And Jehovah will say to Moses, Review every first-born male to the sons of Israel, from the son of a month and above, and take up the number of names.

And take the Levites for me (I Jehovah) instead of all the first-born of the sons of Israel; and the cattle of the Levites instead of all the first-born among the cattle of the sons of Israel.

And Moses reviewed as Jehovah commanded him, all the first-born of the sons of Israel.

And every first-born male shall be according to the number of names, from the son of a month and above, for those being reviewed, two and twenty thousand three and seventy and two hundred.

Take the Levites instead of all the first-born of the sons of Israel, and the cattle of the Levites instead of their cattle; and the Levites shall be to me: I Jehovah.

And the price of redemption of the three and seventy and two hundred, of those remaining over the Levites, from the first-born of the sons of Israel:

From the first-born of the sons of Israel he took the silver; five and sixty and three hundred and a thousand, according to the holy shekel.

For being given, they were given to me from the midst of the sons of Israel; instead of the first-born cleaving every womb, every one from the sons of Israel, have I taken them to me.

For to me all the first-born among the sons of Israel among man and among cattle: in the day I struck every first-born in the land of Egypt I consecrated them to me.

And I will take the Levites instead of all the first-born among the sons of Israel.

Every thing cleaving the womb for all flesh, which they shall bring to Jehovah, in man or in cattle, shall be to thee: but redeeming, thou shalt redeem the first-born of man, and the firstborn of unclean cattle thou shalt redeem.

But the first-born of a cow, or the first-born of a sheep, or the first-born of a goat, thou shalt not redeem; they are holy: their blood shalt thou pour out upon the altar, and their fat thou shalt burn a sacrifice for an odor of sweetness to Jehovah.

Reuben, the first-born of Israel; the sons of Reuben: Hanoch, the families of the Hanochites: for Pallu, the families of the Palluites

And the Egyptians burying whom Jehovah smote among them, all the first-born: and upon their gods Jehovah did judgments.