Bible Verses About Avenger of Blood: Cain fears

lo, Thou hast driven me to-day from off the face of the ground, and from Thy face I am hid; and I have been a wanderer, even a trembling one, in the earth, and it hath been--every one finding me doth slay me.'

And Jehovah saith to him, `Therefore--of any slayer of Cain sevenfold it is required;' and Jehovah setteth to Cain a token that none finding him doth slay him.