Matthew 24:17-21

Let him which is on the housetop not come down to take any thing out of his house:

Neither let him which is in the field return back to take his clothes.

And woe unto them that are with child, and to them that give suck in those days!

But pray ye that your flight be not in the winter, neither on the sabbath day:

For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.