He (Jesus) DID say; when asked point blank what GOD requires; answered:
That is ultimately it. It really is about meeting a Person who will infuse your life with newness and bear the old sin away. And that with a patience greater than that of any human being.
I can’t tie being a Christian to earthly participation in any particular denomination. There’s nothing in scripture to justify such a position, and much about the Lord to militate against it.