Charles Ellicott Commentary Ephesians 4:3

"giving diligence to keep the unity of the Spirit in the bond of peace." — Ephesians 4:3 (ASV)

Ephesians 4:12–16 returns from the diversity of functions to the singleness of object—namely, the perfecting of individual souls in the likeness of Christ, and so the building up of the whole Church in unity with Him.