God said, Take your only Son whom you love, to Moriah. It is the LOVE between God and His children that is so wonderful. It is the ultimate. And God already has angels. And God already has angels.
Angels have that.
If that is your idea of being a Christian, then you are far below what God intended. God wants something more. God already has them around. All along it was going to be a Son. Hebrews quotes the prophets from the OT and shows that it could not be an Angel that God would send to tell us the Gospel.