Context Summary
Revelation 15:5–8 describes the seven angels emerging from the sanctuary in heaven in possession of seven plagues. They receive seven bowls full of the wrath of God. No one is able to enter the sanctuary until the seven plagues end. Chapter 16 of Revelation tells what happens when the seven angels pour out the bowls of wrath onto the earth. The great day of God’s wrath is described in Revelation 19:11–15 and prophesied in Isaiah 13:6. Matthew 13:40–42 reports Jesus’ prediction that rebels will be taken away from the earth.

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What does Revelation 15:8 mean? | BibleRef.com

Revelation 15:8

⁸ The temple was filled with smoke from the glory of God, and from his power. No one was able to enter into the temple until the seven plagues of the seven angels would be finished.