What the Bible says about Lamech's Pride and Boastfulness
(From Forerunner Commentary)
Lamech was five generations removed from Cain. His sins run from polygamy to murder to boastful pride in his transgressions. Though it cannot be proven, Jewish tradition claims he killed his forefather Cain as well as righteous Enoch (verse 23). Though his children were talented and inventive, the general tone of the passage suggests that they achieved their progress apart from God (see verse 16).
Richard T. Ritenbaugh
'As It Was In the Days of Noah'