NET
12 He exercised all the ruling authority of the first beast on his behalf, and made the earth and those who inhabit it worship the first beast, the one whose lethal wound had been healed.
Darby
12 and it exercises all the authority of the first beast before it, and causes the earth and those that dwell in it to do homage to the first beast, whose wound of death was healed.
KJV
12 And he exerciseth all the power of the first beast before him, and causeth the earth and them which dwell therein to worship the first beast, whose deadly wound was healed.