Shiloh

To the Truth of God fulfilled in the Old Testament
Genesis 17:6 I will make you exceedingly fruitful, and I will make you into nations, and kings shall come from you.
Genesis 49:10 [KJV] “The sceptre shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come; and unto him shall the gathering of the people be.”
Judges 1:1 “Who shall go up first for us against the Canaanites, to fight against them?” 2 The Lord said, “Judah shall go up; behold, I have given the land into his hand.”

God is establishing His family tree based on the new Blood Covenant given to Abraham in Genesis 17 not on the law of blood lines and first-borns. God chooses Isaac over Ishmael, his first son. Then history repeats itself and from Isaac’s sons God chooses Jacob,  his second born twin.  The line is shifted even further when Jacob gives his fourth son a prophetic blessing of authority in Genesis 49. FYI: Shiloh is a name of Hebrew origin, meaning “tranquil,” “abundance,” and “His gift” — and it’s “unto him shall the gathering of the people be.”

Luke 1:33
When the angel Gabriel appeared to Mary to announce she had been chosen by God to give birth to the Messiah, these were the words used to describe what he (the Gift) would accomplish:
“And he will reign over the house of Jacob forever”