Revelation 10:4

And when the seven thunders had sounded, I was about to write; but I heard a voice from heaven saying, "Seal up what the seven thunders have said, and do not write it down."

Revelation 1:11

saying, "Write in a book what you see, and send it to the seven churches: to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea."

Revelation 22:10

And he said to me, "Do not seal up the words of the prophecy of this book, for the time is near.

Revelation 2:1-3

"To the angel of the church in Ephesus write: 'These are the words of him who holds the seven stars in his right hand, who walks among the seven golden lampstands:

Treasury of Scripture Knowledge

Summary

And when the seven thunders had uttered their voices, I was about to write: and I heard a voice from heaven saying unto me, Seal up those things which the seven thunders uttered, and write them not.

Bible References

I was

Revelation 1:11
saying, "Write in a book what you see, and send it to the seven churches: to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea."