The Day of the Lord in Scripture oft-times references a temporal trial-struggle in which there was-is much suffering. And so, associated with this -day- is seismic disturbances -e.g., Joel 2-1-11- 2-31- 3-16-, violent weather -Ezek. 13-5ff-, clouds and thick darkness -e.g., Ezk. 2-2- Zeph. 1-7ff-, cosmic upheaval -Zeph. 2-3, 30-, wars, rumors of war, hardship, trial, and oppression -Mt. 24-6-.-Think of the birth pangs of a woman in labor. That is what the trials and difficulties of life in this age truly are. In theology, we don't call them -Labor Pains- but -Portents- -cf. Rom. 8-19-22- Biblically speaking we expect that these Portents will characterize life in this world but will intensify right before the end -just as with labor pains, cf. Mt. 24-21-22--