Who formerly were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was being prepared, by which a few, that is, eight souls were saved through water.
All Commentaries on 1 Peter 3:20 Go To 1 Peter 3
Tertullian of Carthage
AD 220
But (in vain): for they who had originated those of the former seed sent into the ark (secretly and stealthily, and unknown to that Mother-Virtue), together with those "eight souls".
Once more, "two (joined) into one flesh "undertake (the duty of) "growing and multiplying"-Noah, (namely), and his wife, and their sons, in single marriage.