Gentiles did not HAVE to undergo circumcision, okay? That is mostly a hygienic practice but should not be an exclusion to join a congregation. Need I go on? It’s common sense stuff. If you don’t have common sense then follow what Jesus did in His life. I didn’t go to a bar-Mitzvah or have a menorah. The 10 Commandments were re-affirmed in the NT numerous times. Without the law, we know not sin (1John3:4). It is our duty to follow the known will of God (Eccl. 12:13).
Will doing this SAVE you?