Your supposed to know what to watch for that precedes Christ's return.

Christ lays it all out in Matthew 24 and there are a whole lot of pretty obvious things that need to happen before He comes when one is standing in the light.

If one is standing in darkness then they will have no clue really when He might return. And Christ will show up like a thief for them because they will think they are already worshiping Him but they'll be worshiping the devil in this rapture heist he pulled off with all his fallen angels.