The Law of Works, The Law of Christ

Thomas Boston writes in his Notes, found in Edward Fisher's The Marrow of Modern Divinity:

The law of works is the law to be done, that one may be saved; the law of faith is the law to be believed, that one may be saved; the law of Christ is the law of the Saviour, binding his saved people to all the duties of obedience, (Gal 3:12, Acts 16:31)...

The law of works, and the law of Christ, are in substance but one law, even the law of the ten commandments - the moral law - that law which was from the beginning, continuing still the same in its own nature, but vested with different forms. And since that law is perfect, and sin is any want of conformity unto, or transgression of it, whatever form it be vested with, whether as the law of works or as the law of Christ, all commands of God unto men must needs be comprehended under it...

The distinction between the law of works and the law of Christ, as above explained according to the Scriptures, and the mind of our author, is the same in effect with that of the law, as a covenant of works, and as a rule of life to believers, and ought to be admitted, (Westm. Confess. chap. 19, art. 6). For, (1.) Believers are not under, but dead to the law of works, (Rom 6:14), "For ye are not under the law, but under grace..."

"The law of Christ is an "easy yoke," and a "light burden," (Matt 11:30); but the law of works, to a sinner, is an insupportable burden, requiring works as the condition of justification and acceptance with God, as is clear from the whole of the apostle's reasoning, (Rom 3)."