John 4:23-24
But the hour is coming, and now is, when the true worshipers will worship the Father in spirit and truth, for such the Father seeks to worship him. God is spirit, and those who worship him must worship in spirit and truth.
In the book of Revelation, John tells us he was “in the Spirit” on the “Lord’s Day.” To be in the Spirit, we do not leave our bodies behind nor fall into a trance (as the New Age suggests). Nor do we ignore what is physical and concentrate only on the disembodied word of God. Rather, we simply approach the One who has received the Spirit without measure. He comes to us, not only in the liturgy of the word but in the sacraments—-and especially the Eucharist. Today, go to Mass and enter into the highest form of worship in the universe: the Offering God the Son makes to God the Father. That is worship in spirit and truth.
