What Christian group lived in Palestine and taught that Christians should keep the Law?

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The Jewish-Christian adoptionists, also known as the Ebionites, were a Christian group that lived in Palestine during the early church era. They believed that Jesus was the Messiah, but also insisted that Christians should keep the Law of Moses, including circumcision and dietary restrictions. Their teachings were considered heretical by the proto-orthodox church.

What Christian Group Lived in Palestine and Taught That Christians