The basis on which this imputation proceeds, is our union to Christ. There is, first, our natural union constituting Him a member of our race; a man as truly as we are men. But this, though an essential prerequisite, is not by itself enough; for if so, mere humanity would constitute every sinner a sharer in His righteousness. There must be added our mystical union, in which a legal and spiritual connection are established by God's sovereign dispensation, making Him our legal and our spiritual Head.

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