4:10. And he said to him: What hast thou done? the voice of thy
brother's blood crieth to me from the earth.

4:11. Now therefore cursed shalt thou be upon the earth, which hath
opened her mouth and recieved the blood of thy brother at thy hand.

4:12. When thou shalt till it, it shall not yield to thee its fruit: a
fugitive and a vagabond shalt thou be upon the earth.

4:13. And Cain said to the Lord: My iniquity is greater than that I may
deserve pardon.

4:14. Behold thou dost cast me out this day from the face of the earth,
and from thy face I shall be hid, and I shall be a vagabond and a
fugitive on the earth: every one therefore that findeth me, shall kill
me.

Every one that findeth me shall kill me... His guilty conscience made
him fear his own brothers and nephews; of whom, by this time, there might
be a good number upon the earth; which had now endured near 130 years;
as may be gathered from Gen. 5.3, compared with chap. 4.25, though in
the compendious account given in the scriptures, only Cain and Abel are
mentioned.

4:15. And the Lord said to him: No, it shall not so be: but whosoever
shall kill Cain, shall be punished sevenfold. And the Lord set a mark
upon Cain, that whosoever found him should not kill him.

Set a mark, etc... The more common opinion of the interpreters of holy
writ supposes this mark to have been a trembling of the body; or a