“God is a Spirit: and they that worship him must worship him in spirit and in truth.” (v.24)
God is not a corporeal being, made up of blood, flesh, and bones. Nor does He have senses as bodies have, to be pleased through fleshly appetites. He is however a spiritual Being, the Father of spirits, and requires spiritual worship proportioned to His being. Therefore, those worship Him, must do it with their spirits, and according to the rule that he has prescribed, in truth.
Though He required, of His people under the law, a more ritualistic form of worship, this is now to stop and a new and more personal/spiritual worship was to begin. The spirit or the soul of man, as influenced by the Holy Spirit, could now worship God and have communion with him directly.
Therefore no priest or temple is needed, for our bodies are the temple of the Holy Spirit (1 Corinthians 6:19-20) and our God does not dwell in temples made by hands (Acts 7:48) but in our hearts.
If we are in Jesus, our spirits identify with His Spirit for a personal relationship with God. The veil of the law is lifted and the glory of the new covenant is established. Hallelujah!
The Truth
“Now the Lord is the Spirit; and where the Spirit of the Lord is, there is liberty.” (1 Corinthians 3:17)