Musar sobre Zacarias 13:2

We have previously discussed the fact that anyone whose soul, נשמה, is rooted in the very highest regions of the Celestial Spheres, in the עולם האצילות, can never be the cause of sin. If however, his soul is only on the level of רוח, then he may become the source of sin through the seduction of the serpent which was affected by the spirit of envy, which in turn brings in its wake the spirit of טומאה, impurity. King David constantly begged that the Holy Spirit, רוח הקדושה, as well as the spirit of wisdom and understanding may inhabit him, and that the prophecy of Zachariah 13,2, where G–d says "I will remove the spirit of impurity from Earth," be fulfilled in the future.