Oh, also in the case of Genesis, the last blessings were specifically about the tribes of Israel. This is prophecy that plays out in the rest of Jewish history.
Some modern translations ruin it, but Jacob's dying words to Judah are his prophecy about the Messiah coming from the tribe of Judah (along with the Davidic kings).
"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."
In other words, once the period of the kings (the sceptre) of Judah have disappeared, Shiloh - meaning "the peaceful one" - will come.. and all people will gather to him.
Some modern versions obscure this, and might translate it abstractly and not as a proper name or something else equally bad. But it was always understood as one of the earliest Messianic prophecies (it's 2000 years before Christ). This is one reason why people in Jesus' time were expecting a Messiah. The era of kings had disappeared and Messianic hope was in the air.