Here is a gem from one Obadiah Sedgwick, Westminster Assembly member:
They [believers] have immunity or freedom from justification by the Law, from all legal trials for life. Although you are not freed from the Law as it is a rule for life, yet you are freed from the Law as it is a Covenant of life; although you are not freed from the Law as it is the image of the good and holy will of God, yet because you are under the Covenant of grace, you are freed from the Law as it is a reason of salvation and justification. The Covenant of grace takes you off from that Court and Bar which pronounceth life upon your own good works, and pronounceth death upon your own evil works; Rom. 3:28, We conclude that a man is justified by faith without the deeds of the Law. Gal. 3:11, No man is justified by the Law in the sight of God, for the just shall live by faith. As the law calls for perfect and personal righteousness of our own; so the Law will not justify you, it will not give life unto you, unless it finds that righteousness in you; you live not, if you be not perfectly righteous; absolution is pronounced upon your own perfect innocence, and condemnation is pronounced upon any defect or breach. And verily on this account no living man can or shall be justified; therefore here is comfort, that being in Christ, and in this Covenant of grace, ye are justified from all things from which ye could not be justified by the Law of Moses; see the Apostle, Acts 13:39. Your life doth not lie now in your own righteousness, but in the righteousness of Christ; nor doth it depend on your own works, but upon the obedience of Christ. That expression of Luther is an excellent expression … ‘Though my works have been very good, yet not those but Christ doth justify me; and though my works have been very ill, yet the righteousness of Christ can and will justify me; my evil works shall not damn me, and my good works cannot acquit me; it is Christ, it is Christ, and not the Law which justifies me.’
Obadiah Sedgwick, The Bowels of Tender Mercy Sealed in the Everlasting Covenant (London: Printed by Edward Mottershed, for Adoniram Byfield, 1661), 81.
I’m actually writing up Sedgwick on the free offer (some excellent sermons on Rev 3:20) at the moment and this was in my notes – thought it was worth sharing!