Matthew 24:36-39

But of that day and hour no one knows, no, not even the angels of the heavens, but my Father only. But as the days of Noah were, so shall also the coming of the Son of man be. For as they were in the days before the flood, eating and drinking, marrying and giving in marriage, until the day that Noah entered into the ark, and they knew not until the flood came and took them all away; so shall also the coming of the Son of man be.