"I, the Lord, promise that a new time will certainly come when I will raise up for them a righteous branch, a descendant of David. He will rule over them with wisdom and understanding and will do what is just and right in the land.

As for you, Bethlehem Ephrathah, seemingly insignificant among the clans of Judah -- from you a king will emerge who will rule over Israel on my behalf, one whose origins are in the distant past.

And you, Bethlehem, in the land of Judah, are in no way least among the rulers of Judah, for out of you will come a ruler who will shepherd my people Israel.'"

For it is clear that our Lord is descended from Judah, yet Moses said nothing about priests in connection with that tribe.

Birthright was

The blessings of your father are greater than the blessings of the eternal mountains or the desirable things of the age-old hills. They will be on the head of Joseph and on the brow of the prince of his brothers.

because those whom he foreknew he also predestined to be conformed to the image of his Son, that his Son would be the firstborn among many brothers and sisters.

General references

From the descendants of Judah: According to the records of their clans and families, all the males twenty years old or older who could serve in the army were listed by name.

These were the families of Judah according to those numbered of them, 76,500.

In the day he divides his inheritance he must not appoint as firstborn the son of the favorite wife in place of the other wife's son who is actually the firstborn.