What is needed is not that children should come of age, in some natural process of maturation, but that God should intervene to change the conditions of the possible. That is what Paul traces in 4:4–6, which (like 3:13–14) summarizes the Christ-event as the participation of Christ in the human domain (and specifically “under the Law”) so that believers might participate in the privileges of the Son.
This is so insightful
