432. Verse 24 For sevenfold will Cain be avenged, and Lamech seventy-sevenfold.

This means that men annihilated the faith meant by 'Cain', which it was utterly forbidden to violate; that at the same time they annihilated charity, which born by means of faith, something even more inviolable; and that on account of this, condemnation followed, which is 'being avenged seventy-sevenfold'.