(4) Wherefore (g) gird up the loins of your mind, be sober, and (5) hope (h) to the end for the grace (6) that is to be brought unto you (7) at the revelation of Jesus Christ;
(4) He goes from faith to hope, which is indeed a companion that cannot be separated from faith. He uses an argument taken by comparison: We should not be wearied in looking for so excellent a thing, which the very angels wait for with great desire.
(g) This is a borrowed speech, taken from common use among them: for since they wore long garments, they could not travel unless they girded up themselves: and hence it is that Christ said, Let your loins be girded up. (5) He sets forth very briefly, what manner of hope ours ought to be, that is, continual, until we enjoy the thing we hope for: then, what we have to hope for, that is, grace (that is, free salvation) revealed to us in the gospel, and not that, that men do rather and fondly promise to themselves.
(h) Soundly and sincerely. (6) An argument to stir up our minds, seeing that God does not wait until we seek him, but causes so great a benefit to be brought even unto us. (7) He sets out the end of faith, lest any man should promise himself, either sooner or latter, that full salvation, that is, the latter coming of Christ. In addition warns that that which we are now, is not yet revealed.