That's the teaching of the Torah. Israel is YHWH's Firstborn Son, that will always exist, as the head of humanity. You're better off worshiping Israel, or the Jewish people than your false god Jesus. Repent and become a Noahide like me, under the authority of the rabbis. We receive our instructions, and teachings from the rabbis, the teachers of Israel, and we serve YHWH and the Jewish people. That is freedom and salvation, eternal life. To do otherwise is monkeydom. The nations or goyim, step into their purpose and relationship with YHWH, by helping Jacob keep his covenant.
Israel will build The Temple and perform rituals that sustain the world, and rid it of demonic powers. The forces of evil will be under the heel of Jacob and those who serve Him. As a wife serves her husband, the nations must serve Israel. That's what it means to be a righteous human being, in an intimate relationship with YHWH, fulfilling your purpose as a non-Jew.