You must depend on Christ only. Life and strength come from him. You were taught the truth. You must continue to be sure of that true teaching. And always be thankful.
Be sure that no person leads you away with false ideas and words that mean nothing. Those ideas come from people, not Christ. Those ideas are the worthless ideas of people in the world.
In Christ you had a different kind of circumcision. F9 That circumcision was not done by the hands of any person. I mean you were made free from the power of your sinful self. That is the kind of circumcision Christ does.