For God has put it into their hearts to carry out His purpose by uniting to give their kingdom to the beast, until the words of God are fulfilled.
KJV
For God hath put in their hearts to fulfil his will, and to agree, and give their kingdom unto the beast, until the words of God shall be fulfilled.
ASV
For God did put in their hearts to do his mind, and to come to one mind, and to give their kingdom unto the beast, until the words of God should be accomplished.