Revelation 8:1

AND when he opened the seventh seal, there was silence in heaven about half an hour.

Revelation 6:1

AND I saw when the Lamb opened one of the seven seals, and heard one of the four cherubs say like the sound of thunder, Come.

Revelation 5:1

And I saw at the right hand of him that sat on the throne a book written. within and on the backside, sealed with seven seals.

Revelation 6:3

And when he opened the second seal, I heard the second cherub say, Come.

Revelation 6:5

And when he opened the third seal, I heard the third cherub say, Come. And I saw, and behold, a black horse, and he that sat on it had a pair of scales in his hand.

Revelation 6:7

And when he opened the fourth seal, I heard the fourth cherub say, Come.

Revelation 6:9

And when he opened the fifth seal, I saw under the altar the souls of those killed for the word of God and for the testimony which they had.

Revelation 6:12

And I saw when he opened the sixth seal, and there was a great earthquake, and the sun became black as sackcloth of hair, and all the moon became as blood,

Revelation 5:9

And they sung a new song, saying, Thou art worthy to take the book and to open its seals, for thou wast killed and hast redeemed to God with thy blood [men] from 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 at the right hand of him that sat on the throne a book written. within and on the backside, sealed with seven seals.
Revelation 6:1
AND I saw when the Lamb opened one of the seven seals, and heard one of the four cherubs say like the sound of thunder, Come.