This message studies what it means for Jesus to be called the Son of God, first surveying the ordinary ways Scripture uses “son,” biological descent, associative relationship, moral likeness, before showing that Christ’s Sonship is different in kind: he is God’s “only begotten” Son, unique and one of a kind. Texts like John 3:16, Jesus’ words to the Jews in John 8, and his boyhood answer to Mary and Joseph in Luke 2 all point to a Sonship that belongs to Christ alone.
The sermon then turns to how sinners, who in themselves cannot enter the Lord’s presence, are brought into God’s household only through Christ’s adoption, taught to pray “Our Father” because Christ has already paid what we owe. Summing up, it stresses that only by being adopted through Christ can believers be assured a place, now and forever, in the Father’s house.