New Defender's Study Bible Notes
1:5 said he. This is the first of at least forty quotations in Hebrews from the Old Testament Scriptures. A perennial objection of the Jews to Jesus has been that God has no son, since He is one God (Deuteronomy 6:4), so Paul (assuming he is the writer) begins by showing that their own Scriptures prove God to be both Father and Son. This particular reference is from Psalm 2:7, referring not only to God’s Son, but also to His coming resurrection, as the first begotten from the dead (Acts 13:33; Colossians 1:18).