Judaizers are Christians

The covenant with God requires Jews to be loyal to God and to follow the commandments of Judaism.

In return God will make the Jewish people into a great nation, give the land of Israel and be with his people, protecting his people throughout history.

Since the cross, ‘God the son is the covenant of Circumcision’.

In Matthew 5:17-18, as part of His Sermon on the Mount, Jesus says,

"Do not think that I have come to abolish the Law or the Prophets;

I have not come to abolish them but to fulfill them.

For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished."

Judaizers are Christians who teach it is necessary to adopt Jewish customs and practices, especially those found in the Law of Moses, to be saved. The term is derived from the Koine Greek word Ἰουδαΐζειν (Ioudaizein), used once in the Greek New Testament (Galatians 2:14), when Paul publicly challenges Peter for compelling Gentile converts to Early Christianity to "judaize". This episode is known as the incident at Antioch.

This term includes groups who claim the necessity of continued obedience to the Law of Moses found in the Pentateuch (the first five books of the Bible) for gentiles. Members of such groups dispute the label because "Judaizers" is typically used as a pejorative.

Most Christians believe that much of the Old Covenant has been superseded, while according to some modern Protestants it has been completely abrogated and replaced by the Law of Christ. The Christian debate over Judaizing began in the lifetime of the apostles, notably at the Council of Jerusalem and the incident at Antioch. It has been carried on parallel to continuing debates about Paul the Apostle and Judaism, Protestant views of the Ten Commandments, and Christian ethics.

The word Judaizer comes from Judaize, which is seldom used in English Bible translations (an exception is the Young's Literal Translation for Galatians 2:14).

The meaning of the verb Judaize, from which the noun Judaizer is derived, can only be derived from its various historical uses. Its biblical meaning must also be inferred and is not clearly defined beyond its obvious relationship to the word "Jew." The Anchor Bible Dictionary, for example, says: “The clear implication is that gentiles are being compelled to live according to Jewish customs."