A.T. Robertson Commentary Ephesians 4:16

"from whom all the body fitly framed and knit together through that which every joint supplieth, according to the working in [due] measure of each several part, maketh the increase of the body unto the building up of itself in love." — Ephesians 4:16 (ASV)

From which (εξ ου). Out of which as the source of energy and direction.

Fitly framed (συναρμολογουμενον). See 2:21 for this verb.

Through that which every joint supplieth (δια πασης αφης της επιχορηγιας). Literally, "through every joint of the supply." See Col 2:19 for αφη and Php 1:19 for the late word επιχορηγια (only two examples in N.T.) from επιχορηγεω, to supply (Colossians 2:19).

In due measure (εν μετρω). Just "in measure" in the Greek, but the assumption is that each part of the body functions properly in its own sphere.

Unto the building up of itself (εις οικοδομην εαυτου). Modern knowledge of cell life in the human body greatly strengthens the force of Paul's metaphor. This is the way the body grows by cooperation under the control of the head and all "in love" (εν αγαπη).