Jesus was a Jew, we are gentile. Jesus lived as a Jew and we are told we need not be Jews to be accepted by the Lord. But we are told that when we accept Christ in our life we become Israel. That means that we need not follow rituals that Jesus followed but we do need to accept the spirit of God in our life.
We need not be physically circumcised, but we need to set ourselves apart from people who do not let God direct them. We don’t need to follow Jews’ dietary laws, but we need to watch carefully what we let in our bodies and minds. However, when scripture tells us that something is ordered “for all generations” that applies to both Jews and gentiles who accept the Lord.
Gentiles know that by accepting what Christ did for us when He died to pay for our sins, we have eternal life through accepting that, but what about following Jesus in this life? The Jews were doing this, but they have mostly turned away from such a life, and they do not accept what Christ did for them. There is, however, a book written by Israel Abraham called “Jewish Life in the Middle Ages” that spells out the life as Jesus lived it and tells of the results of that. It was after the middle ages that Jews mostly turned from living as Jesus did. These people followed the rituals, also, that we need not follow but they also lived the life the rituals were to lead to and it would be interesting reading for gentiles.
If gentiles accepted Christ, not only as a Savior but as a model for how to live, it would change not only lives for good, but the whole world.