Audio commentary on this verse

Note 10 at Ro 9:19: The argument that Paul was refuting here is not a correct interpretation of what he had said. This is comparable to his statement in Ro 6:1 where he said, "What shall we say then? Shall we continue in sin, that grace may abound?" Paul knew someone would interpret his teaching on grace to be advocating sin; therefore, he spoke their wrong conclusion and then refuted it. Likewise here, he stated an abusive interpretation of his statements and then proceeded to counter it.