But the Comforter, which is the Holy Spirit, whom the Father will send in my name, he shall teach you all things" (John 14:26)
How shall we think of the Holy Spirit? The Bible and Christian theology agree to teach that He is a Person, endowed with every quality of personality, such as emotion, intellect and will. He knows, He wills, He loves; He feels affection, antipathy and compassion. He thinks, sees, hears, and speaks and performs any act of which personality is capable.
One quality belonging to the Holy Spirit, of great interest and importance to every seeking heart, is penetrability. He can penetrate another spirit, such as the human spirit. He can achieve complete penetration of and actual intermingling with the human spirit. He can invade the human heart and make room for Himself without expelling anything essentially human. The integrity of the human personality remains unimpaired. Only moral evil is forced to withdraw.
By nature we are in correspondence with sin; but by union with Christ in His death and resurrection and by the incoming and indwelling of the Holy Spirit we are out of correspondence with it, dead alike to its presence and power.
~A. W. Tozer~