The sect of Rabbi Ieshua took the mythical narrative of the Jews, made it exclusive to themselves, and then projected it as universal to the rest of the world. No wonder they hated the idea, it would have racially destroyed them by mixing with everyone.

Blood isn’t a club, and the gods of one people aren’t the whore of the whole town to be shared.

Ezra 10:10-11

Then Ezra the priest stood up and said to them, “You have been unfaithful; you have married foreign women, adding to Israel’s guilt. Now honor the LORD, the God of your ancestors, and do his will. Separate yourselves from the peoples around you and from your foreign wives.”

Ezra 9:1-2

The people of Israel, the priests and the Levites have not kept themselves separate from the peoples of the lands… They have taken some of their daughters as wives for themselves and their sons, so that the holy race has mingled with the peoples of the lands.

Ezra 6:21

So the Israelites who had returned from the exile ate it [the Passover], together with all who had separated themselves from the unclean practices of their Gentile neighbors in order to seek the LORD, the God of Israel.

These aren’t religious verses in the theological sense, because Jews placed their literature, poetry, myths, tales, and folklore all into the same book. These passages are nationalist, racist, and xenophobic mandates from the priest Ezra, calling on Jews to avoid mixing their blood and to keep their traditions apart from others. Basically. What today we could call fascists and nazis discourses.

These Christians claim that they alone know the right way to live.” — Celsus (via Origen, Contra Celsum 3.55)
A class hated for their abominations, called Christians.” — Tacitus (Annals 15.44)
You Galileans have abandoned the gods of your ancestors.” — Julian the Apostate (Against the Galileans fragment)
Their first lawgiver persuaded them that they are all brothers… and deny the gods.”Lucian – The Passing of Peregrinus 11–13