Therefore, prepare your minds for action,{Literally, "gird up the loins of your mind"} be sober and set your hope fully on the grace that will be brought to you at the revelation of Jesus Christ--
13Wherefore gird up the loins of your mind It is a similitude taken from an ancient custom; for when they had long garments, they could not make a journey, nor conveniently do any work, without being girded up. Hence these expressions, to gird up one’s-self for a work or an undertaking. He then bids them to remove all impediments, that being set at liberty they might go on to God. Those who philosophize more refinedly about the loins, as though he commanded lusts to be restrained and checked, depart from the real meaning of the Apostle, for these words mean the same with those of Christ, 