*15:1 I take it that this is a generic cover statement, referring to the detailed description that follows. I further take it that these ‘bowl’ plagues relate to the seventh trumpet (11:15) and make up the third ‘woe’ (11:14).
†15:2 These people were martyred by order of the Beast, so how did they ‘prevail’ over him? By refusing to bow to him they escaped from hell (14:11); they died physically but won spiritually (but see 12:11).
‡15:3 KJV and NKJV read ‘saints’ instead of “nations”, following the TR which is here based on only two very late manuscripts.
§15:6 The best line of transmission has “heaven”, all the rest having the expected ‘sanctuary’. At first glance the context seems to call for ‘sanctuary’; so much so that if ‘heaven’ were original some might have omitted while others made the obvious change—if ‘sanctuary’ were original, why would anyone omit or change? On the other hand, there are at least three heavens, 2 Corinthians 12:2, and they may have come out of the third, into the second. This is the only mention of the tabernacle of the testimony in Revelation, so the throne of God was not there and none of the action related by John up to this point took place there—there have been several references to the temple, with angels coming out of it, but I doubt that temple and tabernacle are to be equated.
*15:6 Just like the glorified Christ (1:13). Perhaps a belt around the chest was like ‘war paint’, part of getting ready to fight.