Have you ever heard certain Christians speak about getting in touch with their "Jewish roots"?
Guess what?
Christianity does not have its roots in Judaism! Judaism is not the root of Christianity! Yes, both Christianity and Judaism share the same foundational faith of the Old Testament. However, modern Judaism contradicts both Old and New Testament faith. It borrows from Old Testament faith-practices, but has added myriad traditions and laws never spoken by God. As Jesus rebuked them for in His day, they "teach as doctrines the commandments of men," "neglect the commandment of God and hold to the tradition of men," and "reject the commandment of God in order to establish your tradition."
If you are a Christian and you have been conditioned (brainwashed) by Dispensationism's bankrupt theology into believing that Christianity has its roots in Judaism, it is time you learned the truth. While the early Christians were Jews, they were not followers of Judaism. Paul wrote to the Galatians, "For you have heard of my former manner of life in Judaism [the Jews' religion], how I used to persecute the church of God beyond measure and tried to destroy it; and I was advancing in Judaism [the Jews' religion] beyond many of my contemporaries among my countrymen, being more extremely zealous for my ancestral traditions" (1:13-14).
Information on sites like Wikipedia claim that Christianity is rooted in Second Temple Judaism, and that is entirely false! The faith of Abraham had nothing to do with Second Temple Judaism, and this is what Paul tells us: "Therefore, be sure that it is those who are of faith who are sons of Abraham. ... Now the promises were spoken to Abraham and to his seed. He does not say, "And to seeds," as referring to many, but rather to one, "And to your seed," that is, Christ. ... For you are all sons of God through faith in Christ Jesus. ... There is neither Jew nor Greek, there is neither slave nor free man, there is neither male nor female; for you are all one in Christ Jesus. And if you belong to Christ, then you are Abraham's descendants, heirs according to promise." (Gal. 3:7, 16, 26, 28-29).
Ignorant individuals like to cry "anti-semitism" anytime something does not support the Jews. I guess Jesus was the biggest "anti-semite" ever because he constantly stood against its leaders and their hypocrisy. In fact, despite the apostle John being a Jew, his Gospel is apparently highly "anti-semitic," written as someone completely removed from Judaism. However, it is more likely that by the use of "the Jews" John is referring to Jesus' opponents who rejected Him and His message, especially the nation's leaders.
The Old and New Covenants are one continual revelation of Christ Jesus! The New Testament Congregation is the continuation and fulfillment of the Old Testament faith, joining Jews and Gentiles of authentic faith into one body for eternity. Judaism is a corruption borne out of rebellion against God. Neither Jesus nor Paul accepted Judaism as authentic faith! John 10:16; Acts 1:6-8; Romans 2:28-29; Romans 9-11; Galatians 3; Ephesians 2:11-3:13; 1 Peter2:9-10; et al, make it clear that true Israel (Christ Jesus) consists of believing Jews and Gentiles together, for which the Old Testament repeatedly prophesied the Gentile inclusion. It is expansion theology!
Christianity and Judaism are as different as night and day.