In Ephesians, “in Christ” has to do with heavenly position, while “Christ in” the believer connects with all the fullness of God! “Ye in Me” tells of deliverance in Romans; satisfaction in Colossians; heavenly position in Ephesians. “I in you” expresses liberty in Romans; hope of glory in Colossians; all the fullness of God in Ephesians.
Christian Friend, 1896