“When He opened the fifth seal, I saw under the altar the souls of those who had been slain for the word of God and for the testimony which they held. And they cried with a loud voice, saying, ‘How long, O Lord, holy and true, until You judge and avenge our blood on those who dwell on the earth?’ And a white robe was given to each of them; and it was said to them that they should rest a little while longer, until both the number of their fellow servants and their brethren, who would be killed as they were, was completed. I looked when He opened the sixth seal, and behold, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became like blood. And the stars of heaven fell to the earth, as a fig tree drops its late figs when it is shaken by a mighty wind.” Revelation 6:9-13.
“And I saw in the right hand of Him who sat on the throne a scroll written inside and on the back, sealed with seven seals. Then I saw a strong angel proclaiming with a loud voice, ‘Who is worthy to open the scroll and to loose its seals?’ And no one in heaven or on the earth or under the earth was able to open the scroll, or to look at it. So I wept much, because no one was found worthy to open and read the scroll, or to look at it.” Revelation 5:1-4.