18 Flashes of lightning followed, and voices, and peals of thunder, and an earthquake more dreadful than there had ever been since there was a man upon the earth--so terrible was it, and so great!
Revelation 16:18 Cross References - WNT
Matthew 24:21
21 for it WILL BE a time of great SUFFERING, SUCH AS NEVER HAS BEEN FROM THE BEGINNING OF THE WORLD TILL NOW, and assuredly never will be again.
Revelation 4:5
5 Out from the throne there came flashes of lightning, and voices, and peals of thunder, while in front of the throne seven blazing lamps were burning, which are the seven Spirits of God.
Revelation 6:12
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 8:5
5 So the angel took the censer and filled it with fire from the altar and flung it to the earth; and there followed peals of thunder, and voices, and flashes of lightning, and an earthquake.
Revelation 11:13
13 And just as that time there was a great earthquake, and a tenth part of the city was overthrown. 7,000 people were killed in the earthquake, and the rest were terrified and gave glory to the God of Heaven.
Revelation 11:19
19 Then the doors of God's sanctuary in Heaven were opened, and the Ark, in which His Covenant was, was seen in His sanctuary; and there came flashes of lightning, and voices, and peals of thunder, and an earthquake, and heavy hail.