The Fatherhood of God and the Sonship of men.
In verse 2 God is spoken of as "the Father."
(1.) The Old Testament conception of Fatherhood is national. "Israel is my son, even my first born." (Ex. iv. 22, 23.) The relationship is still national, not personal, when God addresses the Hebrew king, the representative head of the nation, thus: "Thou art my son, this day (of solemn consecration) I have begotten thee." (Ps. ii. 7.) The individual Israelite did not dare to call himself a son of God. The Jews were shocked at what they deemed blasphemy when Jesus called himself the Son of God, and they took up stones to stone him.