'Backward' in the Bible

And Shem taketh -- Japheth also -- the garment, and they place on the shoulder of them both, and go backward, and cover the nakedness of their father; and their faces are backward, and their father's nakedness they have not seen.

Dan is a serpent by the way, An adder by the path, Which is biting the horse's heels, And its rider falleth backward.