John Gill

Behold, I come quickly,.... To bring on this hour of temptation on the reformed churches, which will be at the beginning of this period; to help and deliver, save and preserve the truly godly among them; to destroy antichrist, and introduce the latter day glory: hold that fast which thou hast; either her grace in the exercise of it, as her faith, patience, &c. or rather the doctrines of the Gospel, and the ordinances of it, which she had received, as delivered by Christ and his apostles: and which she had held in the truth and purity of them, and is now exhorted to hold them fast, since this hour of temptation would be a trying time to her faith, patience, integrity, and constancy: that no man take thy crown; not eternal happiness, called a crown of life, glory, and righteousness, and which was prepared for her, and promised to her, and would be certainly given her; nor was there any danger of another's taking it from her; not but that exhortations of this kind to the saints are necessary, with respect to that, to excite to diligence, care, and watchfulness; and are no ways contrary to their final perseverance, and certain salvation, but are means thereof: but either her honour for her faith and faithfulness, for her integrity, sincerity, and purity, is here meant; or the glorious things which were spoken of this church state, and to be accomplished in it, Psa 87:3; see Isa 60:1.