And He calls him “a child of hell,” that is, a very hell. And He said “twofold more than you,” that He might both alarm those, and make these feel the more severely, because they are teachers of wickedness. And not this only, but because they labor to instill into their disciples a greater wickedness, hardening them to a much greater depravity than they have, and this is above all a mark of a depraved soul.