and did not know until the flood came and took them all away, so also will the coming of the Son of Man be.
Matthew 24:39
Surrounding context
24:38 For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark,
24:39 and did not know until the flood came and took them all away, so also will the coming of the Son of Man be.
24:40 Then two men will be in the field: one will be taken and the other left.