Matthew 24:21 KJV
For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
Matthew 24:19–23 KJV Chapter Context
19
And woe unto them that are with child, and to them that give suck in those days!
20
But pray ye that your flight be not in the winter, neither on the sabbath day:
21
For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22
And except those days should be shortened, there should no flesh be saved: but for the elect’s sake those days shall be shortened.
23
Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.