Cain

...Cain rose up against Abel his brother, and slew him. Gen. 4:8

And the moon—witness of all earthly deeds— Guards the ocean's secrets in the night. And most terrible among them is the sight— How Cain proceeds. He raised o'er Abel stone or fist on high— And black, thirsting envy cried for blood. Upon the brother-slayer, like a flood, A curse fell from on high. The violent, cruel, very first of deaths... The demon's hunger found its breath. Go, Cain, from soul and earth and sky away— Begone!