To Florus 2.217

Consequently, he destroys the theory of natural sin and teaches that the causes of substance and of will are different. Lest this understanding be attributed more to our ingenuity than to apostolic teaching, let us hear what he added to this passage: ‘But the law came in,’ he says, ‘so that the offense might abound. But where sin abounded, grace abounded beyond it, so that, just as sin reigned into death, grace might reign through righteousness into eternal life through Jesus Christ our Lord’ (Romans 5:20–21). Maintain, then, how your sin—the sin of inherited transmission—began to abound after the law, and what increase it received after Moses’ ministry.