Jesus warns them (and us) that if we do not wake up and watch He will come like a thief to plunder and disposes from those things that hinder their life, but they will not know the hour He comes, even though He comes when they need him most, when they are abiding in the darkness of night. But since they will not be ready, they will be left naked, exposed for their powerless religion.
And when He does come for His Chosen ones, they will find themselves on the other side of the rapture suffering through the day of the Lord’s Wrath.