You stupid people of Galatia! Who put you under an evil spell? Wasn't Christ Jesus' crucifixion clearly described to you?
I want to learn only one thing from you. Did you receive the Spirit by your own efforts to live according to a set of standards or by believing what you heard?
Are you that stupid? Did you begin in a spiritual way only to end up doing things in a human way?
Did you suffer so much for nothing? [I doubt] that it was for nothing!
Does God supply you with the Spirit and work miracles among you through your own efforts or through believing what you heard?
Abraham serves as an example. He believed God, and that faith was regarded by God to be his approval of Abraham.