John Gills Exposition of the Bible Commentary - Genesis 6:1
And it came to pass, when men began to multiply upon the face of the earth ,.... Either mankind in general, or rather the posterity of Cain, who were mere natural men, such as they were when born into the world, and as brought up in it, destitute of the grace of God, and of the knowledge and fear of him; and who in proportion much more multiplied than the posterity of Seth, because of the practice of polygamy, which by the example of Lamech, one of that race, might prevail among them: and... read more
Matthew Henry's Complete Commentary - Genesis 6:1-2
Now here we have an account of two things which occasioned the wickedness of the old world:?1. The increase of mankind: Men began to multiply upon the face of the earth. This was the effect of the blessing (Gen. 1:28), and yet man's corruption so abused and perverted this blessing that it was turned into a curse. Thus sin takes occasion by the mercies of God to be the more exceedingly sinful. Prov. 29:16; When the wicked are multiplied, transgression increaseth. The more sinners the more sin;... read more