Mattityahu (Mat) 24:37-39

For the Son of Man’s coming will be just as it was in the days of Noach. Back then, before the Flood, people went on eating and drinking, taking wives and becoming wives, right up till the day Noach entered the ark; and they didn’t know what was happening until the Flood came and swept them all away. It will be just like that when the Son of Man comes.