"A genealogy shows the direction that the descendants of Cain took in their rejection of the revelation that God had given. The line of descent of Cain through Enoch culminated in Lamech. This man was a bigamist whose three sons were the founders of herding, music, and metallurgy. The fact that culture, including various arts and sciences, is recorded in the genealogy of the rebellious, ungodly line demonstrates that much of the image of God remained in these fallen creatures. These unbelievers still had the ability to discover and invent. Believers should not equate ungodliness with a lack of culture or intelligence."—Kenneth O. Gangel and Stephen J. Bramer,
Where Did Cain Get His Wife? A Rational, Biblical Answer to a Common Bible Difficulty in Genesis 4:17
Cain's wife was likely his sister or niece, consistent with biblical teachings, as early humans could intermarry without genetic risk.

