Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ:
Come in, х kantanteesoomen (G2658) eis (G1519)] - rather, 'until we arrive the whole х hoi (G3588) pantes (G3956)] of us at the unity,' etc. Then the ministry will no longer be needed.
Faith, and of the knowledge. Unity of faith is found when all savingly and fully know х epignooseoos (G1922)] Christ, the object of faith, as "the Son of God" (Ephesians 3:17; Ephesians 3:19; 2 Peter 1:5). Not even Paul thought he had fully "attained" (Philippians 3:12-14). Amidst the variety of gifts, and the multitude of members, the Church's "faith" is ONE: as contrasted with "children ... carried about with EVERY WIND OF DOCTRINE" (Ephesians 4:14).
Perfect man - `unto the full-grown man' (1 Corinthians 2:6; Philippians 3:15; Hebrews 5:14); adult maturity. contrasted with "children" (Ephesians 4:14). Not 'perfect men;' for the many members constitute but one Church joined to the one Christ.
Stature ... The standard ("measure") of spiritual "stature" is "the fullness of Christ;" i:e., which Christ has (Ephesians 1:23; Ephesians 3:19: cf. Galatians 4:19); that the body should be worthy of the Head, the perfect Christ.