The first death was caused by murder when Cain slew his brother Abel, and the second recorded is when Lamech said, "I have slain a man to my wounding," or "for my wound;" which may mean that he did it in self-defence. Genesis 4:23 . God set a mark upon Cain that none should kill him; and Lamech said, "If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold." After the flood God made a definite law concerning murder. God would require expiation for the blood of man, whether it was shed by beast or by man; at the hand of every man's brother, or kinsman, God would require the life of man. "Whoso sheddeth man's blood, by man shall his blood be shed: for in the image of God made he man." Genesis 9:5,6 . This injunction was repeated in the law, and has never been rescinded or modified. Neither does the N.T. in any way alter it: indeed it incidentally confirms it by declaring that the magistrate does not bear the sword in vain. Romans 13:4 . God claims the life of man, and none can set aside His rights.