P.S. Never heard of the term “Judaizer.” Is that from the NT? Whatever it is, it doesn’t sound very nice.The new Christians who attempted to keep Judaizers out of the church were . . .
. . . Jews.
They were converted Jews whose mission was to evangelize Jews. Their brethren.
Jews are not antisemitic; non-Jews are.
And so the New Testament is not antisemitic. It chronicles the conversion of Jews and their subsequent attempts to lead their brethren back to God.