Matthew 24:38 “For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark,”
“For as in the days that were before the flood”: Not all the days before the flood, from the creation of the world; but those immediately preceding it, a century or two before it: they were eating and drinking, marrying and giving in marriage: not that these civil actions of life were criminal in themselves, had care been taken that they were not abused.
It is lawful to eat and drink, provided it be in moderation, and not to excess; and to marry, and give in marriage, when the laws, rules, and ends thereof, are observed: and therefore this must be understood, either of their wholly giving themselves up to the pleasures of life, and lusts of the flesh, without any concern about the affairs of religion, the worship and glory of God, the welfare of their souls and their approaching danger, of which Noah had given them warning.
Or of their luxury and intemperance, in eating and drinking, and of their libidinous and unlawful marriages; for the word here used for eating, signifies eating after the manner of brute beasts: they indulged themselves in a brutish way, in gluttony and drunkenness; and it is certain from the account given of them, in Genesis 6:2 that they entered into unlawful marriages, and unclean copulations.
Wherefore these things may be spoken of them, as what were really sinful and wicked, and denote a course of sinning, a constant practice of these sins of intemperance and lust, and which is still more fully expressed, until the day that Noah entered into the ark.
The observation that the people of Noah’s day “knew not” the severity and suddenness of the coming destruction indicates that this last generation will be totally unprepared for the “coming of the Son of man,” the return of Christ to judge the world (see 2 Thess. 1:7-8).
The reference to “two” being in the field or at work at the time of Christ’s return implies the suddenness of His coming to separate the lost and the saved.