Revelation 4:1

After these things I saw, and behold, a door opened in heaven, and the first voice that I heard, a voice as of a trumpet speaking with me, one saying, Come up hither, and I will show thee the things which must come to pass hereafter.

Revelation 1:10

I was in the Spirit on the Lord's day, and I heard behind me a great voice, as of a trumpet

Revelation 1:19

Write therefore the things which thou sawest, and the things which are, and the things which shall come to pass hereafter;

Revelation 11:12

And they heard a great voice from heaven saying unto them, Come up hither. And they went up into heaven in the cloud; and their enemies beheld them.

Revelation 22:6

And he said unto me, These words are faithful and true: and the Lord, the God of the spirits of the prophets, sent his angels to show unto his servants the things which must shortly come to pass.

Matthew 3:16

And Jesus when he was baptized, went up straightway from the water: and lo, the heavens were opened unto him, and he saw the Spirit of God descending as a dove, and coming upon him;

Mark 1:10

And straightway coming up out of the water, he saw the heavens rent asunder, and the Spirit as a dove descending upon him:

Luke 3:21

Now it came to pass, when all the people were baptized, that, Jesus also having been baptized, and praying, the heaven was opened,

Acts 7:56

and said, Behold, I see the heavens opened, and the Son of Man standing on the right hand of God.

Acts 10:11

and he beholdeth the heaven opened, and a certain vessel descending, as it were a great sheet, let down by four corners upon the earth:

Revelation 16:17

And the seventh poured out his bowl upon the air; and there came forth a great voice out of the temple, from the throne, saying, It is done:

Exodus 1:1

Now these are the names of the sons of Israel, who came into Egypt (every man and his household came with Jacob):

Exodus 19:24

And Jehovah said unto him, Go, get thee down; and thou shalt come up, thou, and Aaron with thee: but let not the priests and the people break through to come up unto Jehovah, lest he break forth upon them.

Exodus 24:12

And Jehovah said unto Moses, Come up to me into the mount, and be there: and I will give thee the tables of stone, and the law and the commandment, which I have written, that thou mayest teach them.

Exodus 34:2-3

And be ready by the morning, and come up in the morning unto mount Sinai, and present thyself there to me on the top of the mount.

John 16:13

Howbeit when he, the Spirit of truth, is come, he shall guide you into all the truth: for he shall not speak from himself; but what things soever he shall hear, these'shall he speak: and he shall declare unto you the things that are to come.

Revelation 1:1-3

The Revelation of Jesus Christ, which God gave him to show unto his servants, even the things which must shortly come to pass: and he sent and signified it by his angel unto his servant John;

Treasury of Scripture Knowledge

Summary

After this I looked, and, behold, a door was opened in heaven: and the first voice which I heard was as it were of a trumpet talking with me; which said, Come up hither, and I will shew thee things which must be hereafter.

Bible References

A door

Exodus 1:1
Now these are the names of the sons of Israel, who came into Egypt (every man and his household came with Jacob):
Matthew 3:16
And Jesus when he was baptized, went up straightway from the water: and lo, the heavens were opened unto him, and he saw the Spirit of God descending as a dove, and coming upon him;
Mark 1:10
And straightway coming up out of the water, he saw the heavens rent asunder, and the Spirit as a dove descending upon him:
Luke 3:21
Now it came to pass, when all the people were baptized, that, Jesus also having been baptized, and praying, the heaven was opened,
Acts 7:56
and said, Behold, I see the heavens opened, and the Son of Man standing on the right hand of God.
Acts 10:11
and he beholdeth the heaven opened, and a certain vessel descending, as it were a great sheet, let down by four corners upon the earth:

The first

Revelation 1:10
I was in the Spirit on the Lord's day, and I heard behind me a great voice, as of a trumpet
Revelation 16:17
And the seventh poured out his bowl upon the air; and there came forth a great voice out of the temple, from the throne, saying, It is done:

And i

Revelation 1:19
Write therefore the things which thou sawest, and the things which are, and the things which shall come to pass hereafter;
Revelation 22:6
And he said unto me, These words are faithful and true: and the Lord, the God of the spirits of the prophets, sent his angels to show unto his servants the things which must shortly come to pass.
John 16:13
Howbeit when he, the Spirit of truth, is come, he shall guide you into all the truth: for he shall not speak from himself; but what things soever he shall hear, these'shall he speak: and he shall declare unto you the things that are to come.

American Standard Version Public Domain