If you are not a Christian, then the day of the Lord is a bad day. It is a time of terrible judgment, all of your sin, all of your moral indifference. And all of your rebellious behavior will be laid bare before the eyes of Him to whom we must give account. And you will not escape. "While people are saying, "Peace and safety," destruction will come on them suddenly, as labor pains on a pregnant woman, and they will not escape."

Isaiah 13:6 says that "the day of the Lord is near; it will come like destruction from the Almighty." And Isaiah 13:9 says "See, the day of the Lord is coming a cruel day, with wrath and fierce anger to make the land desolate and destroy the sinners within it." And in 2 Peter 3:10 we’re told that "the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything in it will be laid bare."

But if you are a follower of Christ, a Christian, then that day will be a day of great joy for we will meet Him in the air, and be changed to be like Him, in a trinkling of an eye! Suddenly Are You Ready to Fly?

1Thessalonians 5:6-11 Therefore let us not sleep, as do others; but let us watch and be sober. For they that sleep sleep in the night; and they that be drunken are drunken in the night. But let us, who are of the day, be sober, putting on the breastplate of faith and love; and for an helmet, the hope of salvation. For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ, Who died for us, that, whether we wake or sleep, we should live together with him. Wherefore comfort yourselves together, and edify one another, even as also ye do