And a third angel followed them, calling out in a loud voice, "If anyone worships the beast and its image, and receives its mark on his forehead or on his hand,

Revelation 7:3
"Do not harm the land or sea or trees until we have sealed the foreheads of the servants of our God."

Revelation 13:12
And this beast exercised all the authority of the first beast and caused the earth and those who dwell in it to worship the first beast, whose mortal wound had been healed.

Revelation 13:14
Because of the signs it was given to perform on behalf of the first beast, it deceived those who dwell on the earth, telling them to make an image to the beast that had been wounded by the sword and yet had lived.

Revelation 13:15
The second beast was permitted to give breath to the image of the first beast, so that the image could speak and cause all who refused to worship it to be killed.

Revelation 13:16
And the second beast required all people small and great, rich and poor, free and slave, to receive a mark on their right hand or on their forehead,

Revelation 13:17
so that no one could buy or sell unless he had the mark--the name of the beast or the number of its name.

Revelation 14:11
And the smoke of their torment rises forever and ever. Day and night there is no rest for those who worship the beast and its image, or for anyone who receives the mark of its name."

Revelation 16:2
So the first angel went and poured out his bowl on the earth, and loathsome, malignant sores broke out on those who had the mark of the beast and worshiped its image.

And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,