Revelation 13:11-18 - The Second Beast From The Earth
11 And I saw another beast ascending out of the earth, and he had two horns like a lamb; but he spake like a dragon. 12 And he exerciseth all the authority of the first beast in his presence; and makes the earth, and those that dwell in it, to worship the first beast, whose deadly wound was healed. 13 And he doth great wonders, so that even maketh fire to come down from heaven to earth in the sight of men; and deceiveth those that dwell on the earth, 14 by the signs which it was given him to do in the presence of the beast, telling the inhabitants of the earth to make an image to the beast, that had received the wound of the sword, and yet lived. 15 And he was permitted to give life to the image of the beast, that it might both speak, and cause all those who would not worship the image of the beast to be slain. 16 And he maketh all, both small and great, rich and poor, free-men and slaves, to receive a mark on their right hand, or on their foreheads: and that no one might buy or sell, 17 but he that hath the mark, or the name of the beast, or the number of his name.
18 Here is wisdom required; and let him, that hath understanding, compute the number of the beast: for it is the number of a man, and his number is six hundred sixty six.