Revelation 8:1

And when He opened the seventh seal, there was silence in heaven for about half an hour:

Revelation 6:1

And I saw when the Lamb opened one of the seals, and I heard one of the four animate beings saying, as with a voice of thunder, Come and see.

Revelation 5:1

And I saw on the right hand of Him that sat on the throne a book written within and without, sealed with seven seals:

Revelation 6:3

And when He opened the second seal, I heard the second animal saying, Come and see.

Revelation 6:5

And when He opened the third seal, I heard the third animal say, Come and see. And I beheld, and lo, a black horse, and he that sat upon it had a balance in his hand.

Revelation 6:7

And when He opened the fourth seal, I heard the voice of the fourth animal saying, Come and see.

Revelation 6:9

And when He opened the fifth seal, I saw under the altar the souls of those that had been slain for the word of God, and for the testimony which they maintained.

Revelation 6:12

And I saw when He opened the sixth seal, and behold there was a great earthquake, and the sun became black as sack-cloth of hair, and the moon was red as blood;

Revelation 5:9

And they sung a new song, saying, Worthy art thou to take the book, and to open its seals; for thou wast slain, and hast redeemed us to God by thy blood, out of every tribe, and tongue, and people, and nation;

Treasury of Scripture Knowledge

Summary

And when he had opened the seventh seal, there was silence in heaven about the space of half an hour.

Bible References

And

Revelation 5:1
And I saw on the right hand of Him that sat on the throne a book written within and without, sealed with seven seals:
Revelation 6:1
And I saw when the Lamb opened one of the seals, and I heard one of the four animate beings saying, as with a voice of thunder, Come and see.