Daniel 12:1 "Now at that time Michael, the great prince who stands guard over the sons of your people, will arise. And there will be a time of distress such as never occurred since there was a nation until that time; and at that time your people, everyone who is found written in the book, will be rescued.

Matthew 24:21 "For then there will be a great tribulation, such as has not occurred since the beginning of the world until now, nor ever will.

Revelation 4:5 Out from the throne come flashes of lightning and sounds and peals of thunder. And there were seven lamps of fire burning before the throne, which are the seven Spirits of God;

Revelation 6:12 I looked when He broke the sixth seal, and there was a great earthquake; and the sun became black as sackcloth made of hair, and the whole moon became like blood; (NASB ©1995)