Judaisers

Judaizers is a term for people who decide to adopt Jewish customs and practices such as, primarily, Christians who practice the Law of Moses. This term is derived from the Koine word Ἰουδαΐζειν (Ioudaizein) used once in the Greek New Testament (Galatians 2:14) where Paul publicly challenges Peter for compelling gentile converts to Early Christianity to "judaize", also 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 first five books of the Old Testament. Members of such groups, notably the Seventh-day Adventist Church, dispute the use of the term because "Judaizers" is typically used as a pejorative.

The formal Christian belief is that much of the Old Covenant has been superseded, while according to some modern Protestants it has been completely abrogated and replaced by the Law of Christ.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.

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