"Jesus, thy perfect righteousness my beauty is"
"When we believe in Christ, by faith we receive our justification. As the merit of his blood takes away our sin, so the merit of his obedience is imputed to us for righteousness. We are considered, as soon as we believe, as though the works of Christ here our works. God looks upon us as though that perfect obedience, of which I have just now spoken, had been performed by ourselves,—as though our hands had been bony at the loom, an though the fabric and the stuff which have been worked up into the fine linen, which is the righteousness of the saints, had been grown in our own fields. God considers us as though we were Christ—looks upon us as though his life had been our life—and accepts, blesses, and rewards us as though all that he did had been done by us, his believing people."Accordingly, if you will turn to the thirty-third chapter of this same prophet Jeremiah, and look at the sixteenth verse, you will see it written, "This is the name wherewith she shall be called, the Lord our righteousness." I know that Socinus in his day used to call this an execrable, detectable, and licentious doctrine: probably it was, because he was an execrable, detectable, and licentious man. Many men use their own names when they are applying names to other persons; they are so well acquainted with their own characters, and so suspicious of themselves, that they think it best, before another can express the suspicion, to attach the very same accusation to someone else.
"Now we hold, you know, that this doctrine is not execrable, but most delightful, that it is not abominable, but Godlike, that it is not licentious, but holy: and let others say what they will of it, we will repeat the praise which we have been singing,— "Jesus, thy perfect righteousness My beauty is, my glorious dress;" and we will day when all things shall be tried by fire, for we feel confident that— "Bold shall we stand in that great day, For who aught to our charge shall lay," when we are clothed with the righteousness divine?" -- Charles Haddon Spurgeon, Jehovah Tsidkenu: The Lord Our Righteousness






