Revelation 8:1

When the Lamb broke the seventh seal, there was silence in Heaven for about half an hour.

Revelation 6:1

And when the Lamb broke one of the seven seals I saw it, and I heard one of the four living creatures say, as if in a voice of thunder, "Come."

Revelation 5:1

And I saw lying in the right hand of Him who sat on the throne a book written on both sides and closely sealed with seven seals.

Revelation 6:3

And when the Lamb broke the second seal, I heard the second living creature say, "Come."

Revelation 6:5

When the Lamb broke the third seal, I heard the third living creature say, "Come." I looked, and a black horse appeared, its rider carrying a balance in his hand.

Revelation 6:7

When the Lamb broke the fourth seal I heard the voice of the fourth living creature say, "Come."

Revelation 6:9

When the Lamb broke the fifth seal, I saw at the foot of the altar the souls of those whose lives had been sacrificed because of the word of God and of the testimony which they had given.

Revelation 6:12

When the Lamb broke the sixth seal I looked, and there was a great earthquake, and the sun became as dark as sackcloth, and the whole disc of the moon became like blood.

Revelation 5:9

And now they sing a new song. "It is fitting," they say, "that Thou shouldst be the One to take the book And break its seals; Because Thou hast been offered in sacrifice, And hast purchased for God with Thine own blood Some out of every tribe and language 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 lying in the right hand of Him who sat on the throne a book written on both sides and closely sealed with seven seals.
Revelation 6:1
And when the Lamb broke one of the seven seals I saw it, and I heard one of the four living creatures say, as if in a voice of thunder, "Come."