Before Paul asks the Galatians a question about their own experience, he asks them if they had been bewitched, using a word indicating sorcery, to make them blind to the crucified Jesus Christ. He then asks them if they received the power of the Holy Spirit because they had been following the Jewish Law. The answer is an obvious 'No'. God gave them the gifts of the Spirit, enabling miracles to be worked among them, because they had believed the Good News of Jesus Christ.