But the one who joins himself to the Lord is one spirit with Him.
1 Corinthians 6:17
Richard Foster, in his book, Celebration of Discipline, speaks about both worship and prayer being a communication and relationship of “Spirit-to-spirit”. That is, God’s Holy Spirit in communion with our spirit as our primary call and purpose in both worship and prayer.
That’s what the Apostle Paul is describing to us in this verse. In fact the Greek word used for “joins” is also used to describe what happens to a man and woman when they marry and consummate their relationship “in intimacy”. As Jesus says in Matthew 19:5, “’FOR THIS REASON A MAN SHALL LEAVE HIS FATHER AND MOTHER AND BE JOINED TO HIS WIFE, AND THE TWO SHALL BECOME ONE FLESH’?” Jesus is quoting from Genesis 2:24 to talk about the purpose and results of the marriage covenant.