John Calvin on Jude 1:15

But the vengeance suspended over the wicked ought to keep the elect in fear and watchfulness. He speaks of deeds and words, Because their corrupters did much evil, not only by their wicked life, but also by their impure and false speech. And their words were hard, on account of the refractory audacity, by which, being elated, they acted insolently. There seems to be a want of due order in the 15th verse; the execution of judgment is mentioned first, and then the conviction of the ungodly; but it is an order which exactly corresponds with numberless passages in Scripture: the final action first, and then that which lends to it. — Ed.