'First born' in the Bible

And Canaan begat Sidon his first-born, and Heth,

These are their generations: the first-born of Ishmael, Nebaioth; then Kedar, and Adbeel, and Mibsam,

The sons of Judah: Er, and Onan, and Shelah; which three were born unto him of Shua's daughter the Canaanitess. And Er, Judah's first-born, was wicked in the sight of Jehovah; and he slew him.

and Jesse begat his first-born Eliab, and Abinadab the second, and Shimea the third,

And the sons of Jerahmeel the first-born of Hezron were Ram the first-born, and Bunah, and Oren, and Ozem, Ahijah.

And the sons of Ram the first-born of Jerahmeel were Maaz, and Jamin, and Eker.

And the sons of Caleb the brother of Jerahmeel were Mesha his first-born, who was the father of Ziph; and the sons of Mareshah the father of Hebron.

These were the sons of Caleb, the son of Hur, the first-born of Ephrathah: Shobal the father of Kiriath-jearim,

Now these were the sons of David, that were born unto him in Hebron: the first-born, Amnon, of Ahinoam the Jezreelitess; the second, Daniel, of Abigail the Carmelitess;

And the sons of Josiah: the first-born Johanan, the second Jehoiakim, the third Zedekiah, the fourth Shallum.

and Penuel the father of Gedor, and Ezer the father of Hushah. These are the sons of Hur, the first-born of Ephrathah, the father of Beth-lehem.

And the sons of Reuben the first-born of Israel (for he was the first-born; but, forasmuch as he defiled his father's couch, his birthright was given unto the sons of Joseph the son of Israel; and the genealogy is not to be reckoned after the birthright.

the sons of Reuben the first-born of Israel: Hanoch, and Pallu, Hezron, and Carmi.

And the sons of Samuel: the first-born Joel , and the second Abijah.

And Benjamin begat Bela his first-born, Ashbel the second, and Aharah the third,

and his first-born son Abdon, and Zur, and Kish, and Baal, and Nadab,

And the sons of Eshek his brother: Ulam his first-born, Jeush the second, and Eliphelet the third.

And of the Shilonites: Asaiah the first-born, and his sons.

And Mattithiah, one of the Levites, who was the first-born of Shallum the Korahite, had the office of trust over the things that were baked in pans.

and his first-born son Abdon, and Zur, and Kish, and Baal, and Ner, and Nadab,

And Meshelemiah had sons: Zechariah the first-born, Jediael the second, Zebadiah the third, Jathniel the fourth,

And Obed-edom had sons: Shemaiah the first-born, Jehozabad the second, Joah the third, and Sacar the fourth, and Nethanel the fifth,

Also Hosah, of the children of Merari, had sons: Shimri the chief, (for though he was not the first-born, yet his father made him chief),