1:21. Keep yourselves in the love of God, waiting for the mercy of our Lord Jesus Christ, unto life everlasting.
Building yourselves upon your most holy faith… Raising by your actions, a spiritual building, founded, 1st, upon faith; 2d, on the love of God; 3d, upon hope, whilst you are waiting for the mercies of God, and the reward of eternal life; 4th, joined with the great duty of prayer.
1:22. And some indeed reprove, being judged:
1:23. But others save, pulling them out of the fire. And on others have mercy, in fear, hating also the spotted garment which is carnal.
And some indeed repove being judged… He gives them another instruction to practice charity in endeavouring to convert their neighbour, where they will meet with three sorts of persons: 1st, With persons obstinate in their errors and sins; these may be said to be already judged and condemned; they are to be sharply reprehended, reproved, and if possible convinced of their error. 2d, As to others you must endeavour to save them, by pulling them, as it were, out of the fire, from the ruin they stand in great danger of. 3d, You must have mercy on others in fear, when you see them through ignorance of frailty, in danger of being drawn into the snares of these heretics; with these you must deal more gently and mildly, with a charitable compassion, hating always, and teaching others to hate the carnal garment which is spotted, their sensual and corrupt manners, that defile both the soul and body.
1:24. Now to him who is able to preserve you without sin and to present you spotless before the presence of his glory with exceeding joy, in the coming of our Lord Jesus Christ:
1:25. To the only God our Saviour through Jesus Christ our Lord, be glory and magnificence, empire and power, before all ages, and now, and for all ages of ages. Amen.
Now to him, etc… St. Jude concludes his epistle with this doxology of praising God, and praying to the only God our Saviour, which may either signify God the Father, or God as equally agreeing to all the three persons, who are equally the cause of Christ's incarnation, and man's salvation, through Jesus Christ our Lord, who, being God from eternity, took upon him our human nature, that he might become our Redeemer.