“And the seven angels came out of the temple, having the seven plagues, clothed in pure and white linen, and having their breasts girded with golden girdles.”
King James Version (KJV)
15:6 And the seven angels came out of the temple - As having received their instructions from the oracle of God himself. St. John saw them in heaven, verse 1, #Rev 15:1| before they went into the temple. They appeared in habits like those the high priest wore when he went into the most holy place to consult the oracle. In this was the visible testimony of God's presence. Clothed in pure white linen - Linen is the habit of service and attendance. Pure - unspotted, unsullied. White - Or bright and shining, which implies much more than bare innocence. And having their breasts girt with golden girdles - In token of their high dignity and glorious rest.
Re 15:6 And the seven angels came out of the temple. The angels mentioned in Re 15:1. Clothed in pure and white linen. "Arrayed with [precious] stone, pure [and] bright" (Revised Version). Probably precious stones covered their garments like those of the robe of the high priest. They come out of the temple as priests of destruction.