Revelation 4:1
After these things, I saw, and behold, a door opened in heaven: and the first voice which I heard was as of a trumpet speaking to me; and it said, Come up hither, and I will show you what shall be hereafter.
Revelation 1:10
I was in the Spirit on the Lord's day, and heard a great voice behind me, as of a trumpet,
Revelation 1:19
Write the things which you see, even those which are, and the things which shall be hereafter.
Revelation 11:12
And they heard a great voice saying to them, from heaven, Come up hither. And they ascended up to heaven in a cloud, and their enemies looked on them.
Revelation 22:6
And he said to me, These words are faithful and true. And the Lord God of the holy prophets, has sent his holy angel to show his servants what must quickly be done.
Revelation 16:17
And the seven poured forth his vial into the air; and there came forth a great voice from the temple of heaven, from the throne, saying, It is done.
Revelation 1:1-3
A revelation of Jesus Christ, which God gave to him, to show to his servants the things which must shortly be; and sending by his messenger, he signified them to his servant John,