A person not trusting in Christ is spoken of has if they do not hold firmly to the head. Christ is spoken of as if he were the head of a body. Alternate translation: "He does not firmly grasp Christ, who is like the head of a body" or "He does not cling to Christ, who is like the head of a body" (See: [[rc://en/ta/man/jit/figs-metaphor]])
Paul speaks of the church, which is ruled and empowered by Christ, as if it were a human body. Alternate translation: "It is from the head that God supplies the whole body throughout its joints and ligaments and holds it together" (See: [[rc://en/ta/man/jit/figs-metaphor]])