Albert Barnes Commentary Matthew 24:37

"And as [were] the days of Noah, so shall be the coming of the Son of man." — Matthew 24:37 (ASV)

Noah. The Greek way of writing Noah. See Genesis 6:1-9:29. The coming of the Son of man would be as it was in the days of Noah:

1. In its being sudden and unexpected, the precise time not being made known, though the general indications had been given.
2. The world would be found as it was then.