He therefore that ministereth to you the Spirit, and worketh miracles among you, doeth he it by the works of the law, or by the hearing of faith?
He therefore (resumptive of Galatians 3:2 ) that ministereth - `supplieth' [epichooregon], God (2 Corinthians 9:10). He who supplied and supplies to you the Spirit. Miracles do not prove grace (Mark 9:38-39). He speaks of them as of unquestioned notoriety: an undesigned proof of their genuineness, (cf. 1 Corinthians 12:1-31.)
Worketh miracles [mighty powers: dunameis (G1411 )] among you - rather, 'IN you' (Matthew 14:2; Ephesians 2:2; Philippians 2:13), at your conversion and since.
Doeth he it by the works of the law - i:e., as a result from [ek] the works of the law (cf. Galatians 3:2). This cannot he, because the law was unknown to you when you received those gifts of the Spirit.