Genesis 7:1

Come thou, and all thy house, into the ark His family consisted only of eight persons, 1 Peter 3:20, namely, Noah and his three sons, and their four wives, Genesis 6:18. By this it appears that each man had but one wife, and consequently it is probable, that, as polygamy began in the posterity of Cain, so it was confined to them, and had not, as yet, got footing among the sons of God. For if ever polygamy had been allowable, it must have been now for repeopling of the perishing world. For thee have I seen righteous before me With the righteousness of faith, as it is explained Hebrews 11:7, evidenced by the fruits of righteousness and true holiness. Those are righteous indeed, that are righteous before God; that have not only the form of godliness, by which they appear righteous before men, who may easily be imposed upon; but the power of it, by which they approve themselves to God, who searcheth the heart.