John 4:24 – God is a Spirit: and they that worship him must worship him in spirit and in truth
John 6:63 – It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
1 Cor 2:14 – But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned