Job 32:8 says: "But there is a spirit in man, and the breath of the Almighty gives him understanding". Elihu is telling Job and his friends that the real understanding of God, and his own difficult situation comes from God's Spirit (Neshamah) and is made know to his spirit (Ruach). Man, being created in God's image, has three parts; body, soul, and spirit (1Thes. 5:23). To understand the physical world around use, we have to use the five senses of our body. To understand and interact with the psychological, we have to use the function of our soul (mind, emotion, and will). But to understand the spiritual things of God we must use our  spirit. The Apostle Paul said: " But a soulish man does not receive the things of the Spirit of God, for they are foolishness to him and he is not able to know them because they are discerned spiritually (1Cor. 2:14). "God is Spirit and they that worship Him must worship Him in spirit and truthfulness (or reality)" (Jn.4:24). This is why our God seems so mysterious to us.