Matthew Poole and continuators on Genesis 4:24

24. If Cain shall be avenged seven-fold, truly Lamech seventy and seven-fold .

If the slaughter of Cain shall be punished in him that shall kill him, whosoever he be.

(i. e.) My death shall be much more certainly and severely revenged by God upon any man that shall murder me. These words may be, either 1. A profane scoffe. q. d. Since Cain my Father and pattern in murther was so far from being punished by the hand of God, that he had a special protection from him, that no man should dare to touch him, I (whose murther is not so hainous as his was) shall not fare worse than he, and therefore have no reason to fear either God or Men. Or 2. An argument or ground of his security, q. d. I am not onely secured by my own puissance, but by God's Providence, which certainly will be more watchful over me, who have not committed any such horrid crime, than over him that killed his own innocent Brother.