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 seals, and I heard one of the four living beings, saying, as with a voice of thunder, Come, and see.

Revelation 5:1

AND I saw on the right hand of him who was seated on the throne a [volume of a] book written within, and on the back sealed with seven seals.

Revelation 6:3

And when he opened the second seal, I heard the second living being say, Come and see.

Revelation 6:5

And when he opened the third seal, I heard the third living being say, Come and see. And I saw, and lo! a black horse; and he that sat upon it had a pair of scales in his hand.

Revelation 6:7

And when he opened the fourth seal, I heard the voice of the fourth living being saying, Come and see.

Revelation 6:9

And when he opened the fifth seal I saw underneath the altar the souls of those who 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 lo! there was a great earthquake, and the sun became black as sackcloth of hair, and the moon became as blood;

Revelation 5:9

And they sung a new song, saying, Worthy art thou to take the book, and to open the seals thereon; because thou hast been slaughtered, and hast redeemed us for 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 who was seated on the throne a [volume of a] book written within, and on the back 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 living beings, saying, as with a voice of thunder, Come, and see.