Claim. Because the Fall severed direct parent-child access, God could not relate to fallen humanity in His own person in the OT Age; He instead commissioned angels to act on His behalf as temporary mediators.
Elaboration. “Originally, in the Old Testament Age, God was supposed to work directly with people … but the providence could not be completed because of the Fall. Therefore, in sorrow, God pioneered an alternative way of relating to people through angels” (1.2.-in-the-old-testament-age-angels-worked-on-behalf-of-god, 1-283, 1956.12.16). Since angels are also divine beings, they appeared to people as God and served as stand-ins “until the coming of Jesus.” God could not appear as a father to a servant — the relational level did not yet permit it. Angelic mediation was therefore not God’s preference but a grief-driven workaround within providential law.
See also. csg-jehovah-was-an-angel-not-god, csg-restoration-ascent-servant-to-parents