And the mystery of the matter: (Job 14:4) Who can make pure from defilement? Not one! – it purifies the defiled from the right-side, for the priest, of the right-side, is called ‘a pure man’, for to the side [Var. for the side] of the right is the water of the Torah – even though he is impure he is purified in it. ‘And it defiles the pure’ – this is Gevurah, on whose side Samael fell from his holiness, and that which was pure became defiled, because he rules
And a priest who is pure, when he would strive to offer to’Azazel, would purify Israel from all its sins, as it says: (Lev. 16:30) For upon this day it will atone for you, to purify you etc.