But what did Jeremiah say? The Lord hath not sent thee. This refutation ought to be noticed whenever we contend with Satan’s ministers and false teachers; for whatever they may pretend, and with whatever masks they may cover their lies, this one thing ought to be more than sufficient to put an end to their boastings, — that they have not been sent by the Lord. Jeremiah might have contended in a long speech with Hananiah, for he might have been made sufficiently eloquent through the Holy Spirit suggesting and dictating whatever was needful on the subject; but this concise brevity produced much greater effect than if he had made great display and used many words. Let this, then, be borne in mind, that wherever there is a controversy about religion, we ought ever to ask whether he who speaks has been sent by God; for whatever he may babble, though the most acute, and though he may talk things which may fill with wonder the minds of the simple, yet all this is nothing but smoke when his doctrine is not from God. So also we ought at this day to deal in a brief manner with those mercenary dogs of the Pope who bark against the pure truth of the Gospel; we ought to be satisfied with this compendious answer: that God is not their master and teacher.
John Calvin
Commentary on Jeremiah and Lamentations
