By oneself the evil is done, by oneself one suffers; by oneself evil is left undone, by oneself one is purified. Purity and impurity belong to oneself, no one can purify another.
John Calvin comments on today’s passage: God is only rightly served when his law is obeyed. It is not left to every man to frame a system of religion according to his own judgment, but the standard of godliness is to be taken from the Word of God.
