"For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape" (1 Thessalonians 5:3). At this point, they are calling for the peace through united prayer. At some point, such will be declared, and then "then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be" (Matthew 24:21).