A human religion?

(Horatius Bonar, "The Way Of Cain") "Woe to them! They have taken the way of Cain . . ."         Jude 11 Cain is not an atheist, nor an altogether irreligious man. He acknowledges a God, and brings his fruits to the altar. But he brings no lamb, no blood, nothing that speaks of death. He comes with no confession, no cry for mercy. He has a religion, but it is self made; a human religion, something of his own; without Christ, or blood, or pardon. Rejection of God's religion, and of His Messiah; this is "the way of Cain." "Woe to them! They have taken the way of Cain . . ."         Jude 11