2 Corinthians 5:21 For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.

He is made all our sin, as truly as He has none of His own; we are made all His righteousness, as truly as we have none of ours. For it is we, wholly and completely, that are His sin; He, wholly and completely, that is our righteousness. For us He is made sin; in Him we are made the righteousnes of God. If we are in Him, then all our sin; the sin of our life, and heart, and nature; our original sin and our actual sin; our sin that has been, is, and shall be; the sin that dwelleth in us; in short, the sin that we are; —this, Christ is made for us. All of us that is sin; all on which the sword of justice could smite and the sting of death fasten; we ourselves thus are made over to Him as His sin. And His righteousness;—the righteousness of His heart, and life, and nature; His original and actual righteousness; the entire lovely moral beauty of His person, His every righteous principle of thought, affection, will, desire and deed; the righteousness, in short, which He is;—this, we are made in Him. All of Him that is righteousness; all of Him on which the approbation, love, joy and delight of the Father can rest; He himself this is made of God unto us righteousness. For it is whole Christ that is “the end of the law for righteousness unto everyone that believeth.”

Hugh Martin, The Atonement (Edinburgh, Banner of Truth, 1976) 215-216.