NET
7 But in the days when the seventh angel is about to blow his trumpet, the mystery of God is completed, just as he has proclaimed to his servants the prophets.”
Darby
7 but in the days of the voice of the seventh angel, when he is about to sound the trumpet, the mystery of God also shall be completed, as he has made known the glad tidings to his own bondmen the prophets.
KJV
7 But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets.