“As in the days of Noah were,

So too,

Will be the coming

Of the Son of Man.

As in those days,

Before the flood,

They were eating.

They were drinking.

They were marrying.

They were giving in marriage,

Until the day

When Noah

Entered the ark.

They knew nothing

Until the flood came.

It swept them all away.

Thus,

Will be the coming

Of the Son of Man.”

 

ὥσπερ γὰρ αἱ ἡμέραι τοῦ Νῶε, οὕτως ἔσται ἡ παρουσία τοῦ Υἱοῦ τοῦ ἀνθρώπου

ὡς γὰρ ἦσαν ἐν ταῖς ἡμέραις ἐκείναις ταῖς πρὸ τοῦ κατακλυσμοῦ τρώγοντες καὶ πίνοντες, γαμοῦντες καὶ γαμίζοντες, ἄχρι ἧς ἡμέρας εἰσῆλθεν Νῶε εἰς τὴν κιβωτόν

καὶ οὐκ ἔγνωσαν ἕως ἦλθεν ὁ κατακλυσμὸς καὶ ἦρεν ἅπαντας, οὕτως ἔσται καὶ ἡ παρουσία τοῦ Υἱοῦ τοῦ ἀνθρώπου.

 

There is something similar, almost word for word, in Luke, chapter 17:26-28, but nothing about Noah in Mark.  The days of Noah in Genesis, chapters 6-11, (ὥσπερ γὰρ αἱ ἡμέραι τοῦ Νῶε) were considered to be days of sinfulness.  The Parousia or second coming of the Son of Man (οὕτως ἔσται ἡ παρουσία τοῦ Υἱοῦ τοῦ ἀνθρώπου) would be similar to the end of the sinning days with the flood (ὡς γὰρ ἦσαν ἐν ταῖς ἡμέραις ἐκείναις ταῖς πρὸ τοῦ κατακλυσμοῦ).  They were eating (τρώγοντες), drinking (καὶ πίνοντες), marrying (γαμοῦντες), and giving in marriage (καὶ γαμίζοντες) right up until the day when Noah entered the ark (ἄχρι ἧς ἡμέρας εἰσῆλθεν Νῶε εἰς τὴν κιβωτόν).  They knew nothing (καὶ οὐκ ἔγνωσαν) until the flood came (ἦλθεν ὁ κατακλυσμὸς) and hit them by sweeping them all away (καὶ ἦρεν ἅπαντας).  Thus, it will be like that when the Son of Man comes again at the Parousia (οὕτως ἔσται καὶ ἡ παρουσία τοῦ Υἱοῦ τοῦ ἀνθρώπου).  Just as at the flood in the time of Noah put an end to the sinfulness of men and brought about a new creation, so too would the coming Parousia of the Son of Man bring an end to sinfulness and inaugurate a new kind of creation.