Matthew 24:39-42

39and they knew nothing about what would happen until the flood came and took them all away. That is how it will be at the coming of the Son of Man. 40Two men will be in the field; one will be taken and the other left.

41Two women will be grinding with a hand mill; one will be taken and the other left. 42“Therefore keep watch, because you do not know on what day your Lord will come.