For as it was in the days of Noah, so it will be at the coming of the Son of Man. In (those) days before the flood, they were eating and drinking, marrying and giving in marriage, up to the day that Noah entered the ark. They did not know until the flood came and carried them all away. So will it be (also) at the coming of the Son of Man.
"Two men will be out in the field; one will be taken, and one will be left. Two women will be grinding at the mill; one will be taken, and one will be left. Therefore, stay awake! For you do not know on which day your Lord will come.
"Be sure of this: if the master of the house had known the hour of night when the thief was coming, he would have stayed awake and not let his house be broken into. -Matthew 24
This sounds so much like the 3 days of darkness prophesy... doesn't it?