“What the dogmatic doctrine of the two natures termed ‘Christ’s divinity’ really means is Jesus as ‘only begotten Son’ in his exlusiveness and uniqueness. What is called ‘Christ’s humanity’ really has to do with Jesus as ‘the first-born among many brethren’. For the one person of Jesus Christ is not a matter of two metaphysically different ‘natures’. It is an expression of his exclusive relationship to the Father, by reason of his origin, and his inclusive relationship of fellowship to his many brothers and sisters.
His relationship to God is the relation of God’s own Son to his Father. his relationship to the world is the relationship of the eldest to his brethren (Rom 8.29) and of the first-born of all creation to other created beings (Col 1.15). There is no brotherhood of Christ without his sonship. But his sonship is never without his brotherhood.”
Jurgen Moltmann, The Trinity and the Kingdom (Minneapolis: Fortress Press, 1993), 120.