Matthew 24

36 And concerning that day and the hour no one has known—not even the messengers of the heavens—except My Father only; 37 and as the days of Noah—so will also be the coming of the Son of Man; 38 for as they were, in the days before the flood, eating, and drinking, marrying, and giving in marriage, until the day Noah entered into the Ark, 39 and they did not know until the flood came and took all away, so will also be the coming of the Son of Man.