Revelation 16:15

“Behold I come as a thief, etc.] These are the words of Christ, inserted in a parenthesis in this account, before it is concluded, to acquaint his people with his near and sudden approach, and to give them a word of caution and exhortation in these times of difficulty; for he is the Lord God Almighty, who sent forth these angels to pour out their vials, and whose judgments are applauded as righteous, (<661601>Revelation 16:1,5,7,14) and who so often in (<662207>Revelation 22:7,12,20) says “I come quickly”; and which is to be understood not of his spiritual coming, which will be already at this time, but of his personal coming: and which will be “as a thief”: as it is often expressed,…”

“The gathering of the world kings with the beast against the Lamb is the signal for Christ's coming; therefore He here gives the charge to be watching for His coming and clothed in the garments of justification and sanctification, so as to be accepted. thief-- (Mat 24:43; Pe2 3:10). they--saints and angels. shame--literally, "unseemliness" (Greek, "aschemosunee"): Greek, Co1 13:5 : a different word from the Greek in Rev 3:18 (Greek, "aischunee").”

“Behold, I come as a thief - That is, suddenly and unexpectedly. See the Matthew 24:43 note; 1 Thessalonians 5:2 note. This is designed evidently to admonish people to watch, or to be in readiness for his coming, since, whenever it would occur, it would be at a time when people were not expecting him. Blessed is he that watcheth - Compare Matthew 24:42-44. The meaning here is, that he who watches for these events, who marks the indications of their approach, and who is conscious of a preparation for them, is in a better and happier state of mind than he on whom they come suddenly and unexpectedly. And keepeth his garments - The allusion here seems to be to one who, regardless of danger, or of…”

“Behold, I come as a thief - Suddenly, unexpectedly. Observe the beautiful abruptness. I - Jesus Christ. Hear him. Happy is he that watcheth. - Looking continually for him that "cometh quickly." And keepeth on his garments - Which men use to put off when they sleep. Lest he walk naked, and they see his shame - Lest he lose the graces which he takes no care to keep, and others see his sin and punishment. Revelation 16:16”

“16:15 Readers are warned to look because the Lord will come as unexpectedly as a thief (see also 3:3; Matt 24:43; 25:13; 1 Thes 5:2; 2 Pet 3:10). Being ready for his coming requires preparation; those who are not prepared will not have the proper clothing and will find themselves naked (see Matt 22:11-13). This imagery recalls the two failing churches: lifeless Sardis, which is told to “wake up” (Rev 3:2), and lukewarm Laodicea, which is advised to obtain proper clothing (3:18).”

“I come: Rev 3:3; Mat 24:43; Th1 5:2, Th1 5:3; Pe2 3:10 Blessed: Mat 24:42, Mat 25:13, Mat 26:41; Mar 13:33-37, Mar 14:38; Luk 12:37-43, Luk 21:36; Act 20:31; Th1 5:6; Pe1 4:7 lest: Rev 3:4, Rev 3:18; Exo 32:25; Isa 47:3; Eze 16:37; Hos 2:3; Hab 2:15; Co2 5:3 Revelation 16:16”