In ancient Israel, when non - Jews became proselytes, they had to submit to the Mosaic Law, and males had to symbolize this by getting circumcised.
कुछ यहूदी मसीहियों का मानना था कि परमेश्‍वर के इस्राएल में ग़ैर - यहूदियों पर वही बात लागू होनी चाहिए ।