God Receives Me on the Footing of His Perfection
Poor as my faith in this Substitute may be, it places me at once in the position of one to whom "God imputes righteousness without works." God is willing to receive me on the footing of his perfection; if I am willing to he thus received, in the perfection of another with whom God is well pleased, the whole transaction is completed. I am justified by his blood. "As he is, so am I (even) in this world" even now, with all my imperfections and evils.
To be entitled to use another's name when my own name is worthless, to be allowed to wear another's raiment because my own is torn and filthy, to appear before God in another's personâ€“â€“the person of the Beloved Sonâ€“â€“this is the summit of all blessing. The sin-bearer and I have exchanged names, robes, and persons! I am now represented by him, my own personality having disappeared. He now appears in the presence of God for me (Hebrews 9:24). All that makes him precious and dear to the Father has been transferred to me. His excellency and glory are seen as if they were mine. I receive the love and the fellowship and the glory as if I had earned them all. So entirely one am I with the sin bearer that God treats me not merely as if I had not done the evil that I have done, but as if I had done all the good which I have not done, but which my substitute has done. In one sense I am still the poor sinner, once under wrath; in another I am altogether righteous and shall be so forever because of the perfect one in whose perfection I appear before God. Nor is this a false pretense or a hollow fiction which carries no results or blessings with it. It is an exchange which has been provided by the Judge and sanctioned by law; an exchange of which any sinner upon earth may avail himself and be blest.
Excerpt from The Everlasting Righteousnessby Horatius Bonar