I Am a Worm and No Man, a Reproach of Men and Despised of the People

The word for worm kind of has a dual meaning, in the sense that it describes the animal that was used to make scarlet thread. In the ancient world, only royalty or the very wealthiest people could afford the dye from this worm. And scarlet became identified with christ's kingly authority and wealth. The soldiers at christ's crucifixion placed upon him a robe of scarlet to mock him as king of the jews. But i think that verse six, over all, is talking about that he has descended below all.