The aversion to anything `ghostly` or `mysitical` caused religious thinkers to go so far as to separate the concept of Father from the Holy Spirit, elevating the Father to the first person of the godhead and demoting the Holy Spirit to the third person.   

Many denominations even moved to exclude the Holy Spirit from the Christian experience and corporate worship.   

This error resulted in trinitarianism, when the reality is that our Creator is Spirit Soul And Body just as we who have been created in His image.   

The truth is
   ➛ God is Spirit
   ➛ the Spirit Of God is the Holy Spirit
   ➛ the Holy Spirit is our eternal, omnipotent, omniscient, omnipresent Creator
   ➛ the Holy Spirit is the Father
   ➛ the Holy Spirit is the Spirit Of Christ Jesus
   ➛ the Holy Spirit is greater than the body and soul of Jesus
   ➛ the Holy Spirit has been given unto us
   ➛ the Holy Spirit should fill our bodies via Spirit Baptism
   ➛ the Holy Spirit is Christ in us
   ➛ the Holy Spirit is the Spirit Of Truth
   ➛ the Holy Spirit is the strength of Christ in us

Having a form of godliness, but denying the power thereof: from such turn away. 2Ti 3:5

And be not drunk with wine, wherein is excess; but be filled with the Spirit; Eph 5:18

May all believers in Christ Jesus come to understand that He lives in us by His Holy Spirit and without His Holy Spirit we are none of His.   

Consider what John the Baptist said about Jesus:

I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire: Mat 3:11

Jesus saved us from hell so He could fill us with His Holy Spirit.   
Fully receive Jesus by receiving and being baptized in His Holy Spirit.   

If ye then, being evil, know how to give good gifts unto your children: how much more shall your Heavenly Father give Himself to them that ask him? Luk 11:13