As we can see from His name Holy Spirit…

He is holy.  He is holy simply because He is God.  He is the holy spirit of God and we call Him Holy Spirit.  Thus, being God, we know that He is holy.  As 1 John 1:5 indicates, God is light and in Him is no darkness at all.           

We also see in His name that…

 He is spirit.  Being spirit He is never visible and we can not touch Him.  But He does communicate and commune with us, from His spirit to ours, as we attempt to live in His spirit.  The more we put away the deeds of the flesh and walk in the Spirit, the more we will be able to commune with Him and sense in our spirit and in our mind (which I believe has a connection to the spirit) that He is present with us and wants to help us.  In terms of prayer and worship, we should be glad that God is a spirit, because there is no place where we can not worship Him and be near him.  He is always with us and in us (Ps. 139:7-9; Jn. 4:23-24). 

He is a person.  Some would say that the Holy Spirit is not really fully God, that He is just the force and energy of God, that He is just an agent, just a tool, just a vehicle to carry out the work of God.  For instance, as John Walvoord has documented, “The heretic Arius…[believed that] the Holy Spirit was only the ‘exerted energy of God’”           

However, for us who have read the Bible, we know better.  For in various passages of the Bible we see over and over again that the Holy Spirit has a personality just like the Father and the Son, and like you and me.  In 1 Corinthians 2:11 we see that the Holy Spirit understands the thoughts of God.  In 1 Corinthians 12:11 we read that the Holy Spirit distributes His gifts as He wills, indicating that He thinks and has a will.  Also in Ephesians 4:30 it says, “Do not grieve the Holy Spirit of God.”  Grieving here suggests that the Holy Spirit feels and is capable of feeling sadness.  These are just some of the passages that indicate the Holy Spirit’s personality.  There are many others.  Hence, as John Walvoord has stated, “All the works of the Holy Spirit are such that personality is required.”  Walvoord points out that the way He speaks to us, teaches us, comforts us, empowers us, guides us and prays for us—all these things and more tell us that He is a person.  The Holy Spirit is most definitely a person!