Judah — Whom he puts first, because the best part of the right of the firstborn, namely, the dominion, was conferred upon him, Genesis 49:8, and because the Messiah was to come out of his loins.
Related Commentaries of 1 Chronicles 2:3
1 Chronicles 2:3
3 The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the LORD; and he slew him.