Galatians 3:5

He therefore that supplieth to you the Spirit, and worketh miracles among you, doeth he it by the works of the law, or by the hearing of faith? [According to the unvarying rule of Paul's writings, the pronoun "he" in this verse refers to God rather than to God's minister, though the latter reference might make the smoother reading. The idea is this: Does God, who works miracles among you (or perhaps in you-- Galatians 2:8; Matthew 14:2; Ephesians 2:2; Philippians 2:13), do it as a result of your obedience to the law, or because you have heard the gospel and believed it? Verily, by your belief; and so your case is like Abraham's.]