15 See, the LORD is coming with fire, and his chariots are like a whirlwind; he will bring down his anger with fury, and his rebuke with flames of fire.

Read Isaiah 66:15 Using Other Translations

For, behold, the LORD will come with fire, and with his chariots like a whirlwind, to render his anger with fury, and his rebuke with flames of fire.
"For behold, the LORD will come in fire, and his chariots like the whirlwind, to render his anger in fury, and his rebuke with flames of fire.
See, the LORD is coming with fire, and his swift chariots roar like a whirlwind. He will bring punishment with the fury of his anger and the flaming fire of his hot rebuke.