First, It is none of his own which is of the law, you may be sure; for he hath this righteousness before he doeth any that can be called his own. "He that doeth righteousness is righteous" already, precedent to, or before he doth that righteousness; yea, he is righteous before, even as HE is righteous.
Second, It cannot be his own which is of the gospel; that is, that which floweth from a principle of grace in the soul: for he is righteous before he doeth this righteousness. He that doeth righteousness, IS righteous. He doth not say he that hath done it, but he that doeth it; respecting the act while it is in doing, he is righteous. He is righteous even then, when he is a doing of the very first act of righteousness; but an act, while it is in doing, cannot, until it is done, be called an act of righteousness; yet, saith the text, "He is righteous."
But again, if an act, while it is in doing, cannot be called an act of righteousness; to be sure, it cannot have such influences as to make the actor righteous; to make him righteous, as the Son of God is righteous, and yet the righteousness with which this doer is made righteous, and that before he doeth righteousness, is such; for so saith the text, that makes him righteous as he is righteous.
Besides, it cannot be his own, which is gospel-righteousness, flowing from a principle of grace in the soul; for that in its greatest perfection in us, while we live in this world, is accompanied with some imperfections; to wit, our faith, love, and whole course of holiness is wanting, or hath something lacking in it. They neither are apart, nor when put all together, perfect, as to the degree, the uttermost degree of perfection.
But the righteousness under consideration, with which the man, in that of John, is made righteous, is a perfect righteousness; not only with respect to the nature of it, as a penny is as perfect silver as a shilling; nor yet with respect to a comparative degree; for so a shilling arriveth more toward the perfection of the number twenty, than doth a two-penny or a three-penny piece: but it is a righteousness so perfect, that nothing can be added to it, nor can any thing be taken from it: for so implieth the words of the text, "he is righteous, as Christ is righteous." Yea, thus righteous before, and in order to his doing of righteousness. And in this he is like unto the Son of God, who was also righteous before he did acts of righteousness referring to a law of commandment: wherefore it is said, that as he is, so are we in this world. As he is or was righteous, before he did acts of righteousness among men by a law, so are HIS righteous, before they act righteousness among men by a law. "He that doth righteousness is righteous, as HE is righteous."
Christ was righteous, before he did righteousness, with a two-fold righteousness. He had a righteousness as he was God; his godhead was perfectly righteous; yea, it was righteousness itself. His human nature was perfectly righteous, it was naturally spotless and undefiled. Thus his person was righteous, and so qualified to do that righteousness, that because he was born of a woman, and made under the law, he was bound by the law to perform.
Now, as he is, so are we: not by way of natural righteousness, but by way of resemblance thereunto. Had Christ, in order to his working of righteousness, a two-fold righteousness inherent in himself, the Christian, in order to his working of righteousness, hath belonging to him a two-fold righteousness. Did Christ's two-fold righteousness qualify him for that work of righteousness, that was of God designed for him to do? Why the Christian's two-fold righteousness doth qualify him for that work of righteousness, that God hath ordained, that he should do and walk in this world.
But you may ask, what is that righteousness, with which a Christian is made righteous before he doth righteousness?
I answer, It is a two-fold righteousness.
I. It is a righteousness put upon him.