O. Palmer Robertson on redemption as restoration (in the context of the “pruning”/”ingrafting” passages):
As the concept of “pruning” is being considered, it must be understood that this possibility does not have the effect of nullifying the genealogical principle of natural descendency. Isaac, the chosen seed, was a natural descendant of Abraham, as were Moses, David, Christ, and Paul. While the “pruning” principle may threaten any who would be presumptuous, it does not intend to suggest that God’s grace works against the natural order of creation. The grace of God in salvation is not against creation’s order; it is against sin. The Christian must avoid being lured into a nature/grace dichotomy as he considers the working of God in salvation. Redemption has the effect of restoring the order of creation, and the solidarity of the family is one of the greatest of creation’s ordinances. The genealogical character of redemption’s activity underscores the intention of God to work in accord rather than in discord with this creational orderering. (The Christ of the Covenants, p. 40)
