Revelation 14:9-11

9Then another angel, a third one, followed them, saying with a loud voice, “Whoever worships the beast and his image and receives the mark [of the beast] on his forehead or on his hand,

10he too will [have to] drink of the wine of the wrath of God, mixed undiluted into the cup of His anger; and he will be tormented with fire and brimstone (flaming sulfur) in the presence of the holy angels and in the presence of the Lamb (Christ).

11And the smoke of their torment ascends forever and ever; and they have no rest day and night—those who worship the beast and his image, and whoever receives the mark of his name.”