But in the days of the voice of the seventh angel, when he begins to sound his trumpet, the mystery of God will be fulfilled, just as He proclaimed to His servants the prophets.”
KJV
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.
ASV
but in the days of the voice of the seventh angel, when he is about to sound, then is finished the mystery of God, according to the good tidings which he declared to his servants the prophets.