God judgeth. — In the best MSS. the verb is in the future tense: God will judge. He is the judge of the whole earth; we are to leave the heathen world in His hands.
Therefore put away... — Better omit “therefore.” The Apostle in this passage adopts the form of pronouncing sentence on great criminals, with which especially the Jewish converts would be familiar (Deuteronomy 13:5; Deuteronomy 17:7; Deuteronomy 24:7).