KJV:
And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast.
NASB:
"The ten horns which you saw are ten kings who have not yet received a kingdom, but they receive authority as kings with the beast for one hour.
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.
NASB:
"For God has put it in their hearts to execute His purpose by having a common purpose, and by giving their kingdom to the beast, until the words of God will be fulfilled.