What does Revelation 16:9 mean?

Revelation 16:9 highlights themes such as judgment, blasphemy, repentance when read in context.

How should I apply Revelation 16:9 today?

Read the surrounding passage, compare related cross references, and turn the verse into a short prayer and concrete action.

And men were scorched with great heat, and blasphemed the name of God, which hath power over these plagues: and they repented not to give him glory.

7And I heard another out of the altar say, Even so, Lord God Almighty, true and righteous are thy judgments.

8And the fourth angel poured out his vial upon the sun; and power was given unto him to scorch men with fire.

9And men were scorched with great heat, and blasphemed the name of God, which hath power over these plagues: and they repented not to give him glory.

10And the fifth angel poured out his vial upon the seat of the beast; and his kingdom was full of darkness; and they gnawed their tongues for pain,

11And blasphemed the God of heaven because of their pains and their sores, and repented not of their deeds.

judgmentblasphemyrepentance

Romans 1:21
Both passages discuss the refusal to glorify God despite His power.
Revelation 9:20-21
Similar themes of blasphemy and refusal to repent are present.
Matthew 12:31
This verse discusses the seriousness of blasphemy against the Holy Spirit.