Matthew 24:39-44

They didn’t know until the flood came and swept them all away. This is the way the coming of the Son of Man will be. Then two men will be in the field; one will be taken and one left. Two women will be grinding grain with a hand mill; one will be taken and one left. Therefore be alert, since you don’t know what day your Lord is coming. But know this: If the homeowner had known what time the thief was coming, he would have stayed alert and not let his house be broken into. This is why you are also to be ready, because the Son of Man is coming at an hour you do not expect.