These are my thoughts on the passage now before us. The text shows that the Cainites were tyrannical men, proud of their success, and given to pleasure; and the very words of Lamech prove him to be a proud man, not grieving at all for the murder he had committed, but glorying in it as in a righteous cause. The Cainite church always excuses that tyranny which it exercises over the godly, as Christ says: "Whosoever killeth you shall think that he offereth service unto God," Jn 16, 2. This is expressed in the additional words of Lamech:
V. 24. If Cain shall he avenged sevenfold, truly Lamech seventy and sevenfold.
282. Here Lamech sets himself above his father Cain, making it appear that he had a more righteous cause for the murder he had committed, and fortifying himself against those inclined to avenge the murders perpetrated by him. For the words of the text are not the words of the Lord, as we have said, but the words of Lamech himself. Just so the pope fortifies himself by violence, tyranny, threats and anathemas, to make himself secure against avengers, for he has the conscience of a Cain and a Lamech. Let him, says the pope, who shall do anything contrary to these my decrees know that he shall incur the indignation of St. Peter and St. Paul.
283. Lamech, therefore, is an example of this world, and Moses points to him to show what kind of a heart, will and wisdom the world has. Just as if he had said in reference to Lamech: Such are the actions of the seed of the serpent and such are the children of this world. They gather riches, follow their pleasures, increase their power, and then abuse all these things by their tyranny, making use of them against the true Church, the members of which they persecute and slay. And yet in the midst of all these mighty sins, they fear not, but are proud and secure, boasting and saying, "What can the righteous do?" (Ps 11, 3): "Our lips are our own: who is lord over us?" (Ps 12, 4): "He (the wicked) saith in his heart: God hath forgotten, he hideth his face, he will never see it," (Ps 10, 11): and other like sentiments.
284. That such is the meaning of the passage in question the facts recorded prove, though the words of the text do not so clearly express that meaning. The true Church has ever Satan as its great enemy, and he drives the Cainites into fury, disguised as devotion, against their brethren, the Abels; as Christ also says, affirming that the devil was a murderer from the beginning, Jn 8, 44. It is declared throughout the Scriptures concerning the true Church, that the wicked are ever shedding its blood. The various passages in the Psalms speak the same things, "Precious shall their blood be in his sight," Ps 72, 14. Again, "Precious in the sight of Jehovah is the death of his saints" Ps 116, 15. And again, "For thy sake are we killed all the day long" Ps 44, 22.
285. As, therefore, the Church of God has at all times, and in all ages, given her blood to be shed by the wicked and by false brethren, so also, in that first age of the world she had to suffer from her enemies, whom the Scriptures call "giants," and affirm that those "giants" filled the earth with "violence." Among these giants was also this Lamech now before us, who was one perhaps like Pope Julius II or Clement VII who although they exercised cruelty in the highest degree, yet wished to be called and appear as most holy saints. Just so Lamech here wishes to make it appear that he had a most righteous cause for the murder he had committed, and therefore he threatened greater vengeance on the man who should kill him than God himself had threatened on the person who should slay his father, the murderer Cain.