But he that is joined unto the Lord is one spirit.
One spirit - with Him. In union with a harlot, the fornicator becomes one "body" with her, not one "spirit;" for the spirit-the normal organ of the Holy Spirit in man-is in the carnal so overlaid with what is sensual that it is in abeyance. The believer not only has his body sanctified by union with Christ's body, but also becomes "one spirit" with Him (John 15:1-7; John 17:21; 2 Peter 1:4: cf. John 3:6).