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Revelation 15 Bible study: A sea of glass mixed with fire

The bowls come to the seven angels from "One of the four living creatures" (15:7), and the smoke that fills the temple is "from the glory of God and from his power" (15:8).

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“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.”
Revelation 15:8 · World English Bible

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“In Revelation 15:2, those standing on the sea of glass have "harps of God".”

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What's really going on

Seven angels having the seven last plagues

In the text

John says, "I saw another great and marvelous sign in the sky: seven angels having the seven last plagues, for in them God’s wrath is finished." (15:1) (tap marvelous, plagues, wrath and finished). The rest of the chapter tells what John saw next: a sea of glass and those standing on it, their song, the temple opened, the seven angels coming out, the bowls given to them, and the temple filled with smoke. These notes identify no one and nothing in this chapter with any person, people, power, nation, church or event, give no time for anything in it, and apply none of it to anyone, then or now.

Where the Old Testament leads here

The song of Moses and the song of the Lamb

Interpretation

Exodus 15:1leads toRevelation 15:3

Israel "believed in the LORD and in his servant Moses" (14:31), and "Then Moses and the children of Israel sang this song to the LORD" (15:1). In Revelation, John sees "those who overcame the beast" standing "on the sea of glass" (Revelation 15:2): "They sang the song of Moses, the servant of God, and the song of the Lamb, saying, ‘Great and marvelous are your works, Lord God, the Almighty! Righteous and true are your ways, you King of the nations’" (Revelation 15:3). Their song asks, "Who wouldn’t fear you, Lord, and glorify your name? For you only are holy" (Revelation 15:4). Revelation doesn't say which song of Moses it means. Moses also spoke a song near the end of his life (Deuteronomy 31:30), which says of God, "all his ways are just" (Deuteronomy 32:4). Many hear this song beside the sea in Revelation's song by the sea of glass; others hear Deuteronomy 32, or both.

Honest questions

Questions people ask about Revelation 15

That was a taste

The rest of Revelation 15 is waiting in Favor

  • A sea of glass mixed with fire
  • The seven angels who had the seven plagues came out
  • Lines that land here
  • Set beside this chapter elsewhere in Favor
  • 4 questions as you read
  • 13 more Greek words
  • A short check at the end
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The Greek word behind it

πληγήplegesay play-GAY

Strong's: "a stroke; by implication, a wound; figuratively, a calamity". "seven angels having the seven last plagues" (15:1): behind plagues is this noun, as it is in "The seven angels who had the seven plagues came out" (15:6) and "until the seven plagues of the seven angels would be finished" (15:8).

For your group

Revelation 15 Bible study questions

  1. 1"another great and marvelous sign" (15:1). What is something God has done that you find marvelous?
  2. 2"having harps of God" (15:2). What helps you to praise God, and when did you last do it?
  3. 3"God, who lives forever and ever" (15:7). When you pray, how often do you remember that the one you speak to lives forever and ever, and what might change if you did?

Leading a group? In Favor, everyone reads Revelation 15 during the week and answers these questions privately. Answers stay sealed until you meet, then appear together, and you can print the week's sheet.

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Questions

What is Favor?

Favor is a Bible study app that explains every chapter as you read: the Hebrew and Greek behind the words, the details most readers miss, and how each part of the Bible leads to Jesus. Read on your own, or start a Bible study with friends, family or your church.

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Can I read Revelation 15 straight away?

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Do I need a group?

No. Many people read on their own. If you'd like to read with others, start a Bible study and share one link. Everyone's answers stay private until you meet.

I've never really read the Bible. Is this for me?

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Last reviewed October 12, 2026. Scripture quotations are from the World English Bible, which is in the public domain. Hebrew and Greek words are checked against the original-language texts and public-domain lexicons. What we believe · Favor home