Revelation 10:4

And when the seven thunders spoke, I was about to write: and I heard a voice speaking from the heaven, Seal those things which the seven thunders spoke, and write them not.

Revelation 1:11

saying, Write what you are seeing in a book, and send it to the seven churches; unto Ephesus, and unto Smyrna, and unto Pergamum, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.

Revelation 22:10

And he says to me; Seal not the sayings of the prophecy of this book: for the season is nigh.

Revelation 2:1-3

To the angel who is in the church at Ephesus write; The one holding the seven stars in his right hand, the one walking about in the midst of the golden candlesticks, says these things;

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 what you are seeing in a book, and send it to the seven churches; unto Ephesus, and unto Smyrna, and unto Pergamum, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.