from True Christian Freedom by Samuel Bolton:
All this the apostle puts plainly: ‘Who is he that condemneth? it is Christ that died’ (Rom. 8. 34). He sets the death of Christ against all the charges that can be brought. It is evident that the court of the law cannot condemn the believer:
(1) Because that court is itself condemned; its curses, judgments, and sentences are made invalid. As men that are condemned have a tongue but no voice, so the law in this case has still a tongue to accuse, but no power to condemn. It cannot fasten condemnation on the believer.
(2) Because he is not under it as a court. He is not under the law as a covenant of life and death. As he is in Christ, he is under the covenant of grace.
(3) Because he is not subject to its condemnation. He is under its guidance, but not under its curses, under its precepts (though not on the legal condition of ‘Do this and live’), but not under its penalties.
(4) Because Christ, in his place and stead, was condemned by it that he might be freed: ‘Christ hath redeemed us from the curse of the law, being made a curse for us’ (Gal. 3. 13). It may condemn sin in us, but cannot condemn us for sin.
(5) Because he has appealed from it. We see this in the case of the publican, who was arrested, dragged into the court of justice, sentenced and condemned. But this has no force because he makes his appeal, ‘God be merciful to me a sinner’ (Luke 18. 13). He flies to Christ, and, says the text, ‘He went down to his house justified’. So the court of the law (provided that your appeal is just) cannot condemn, because you have appealed to the court of mercy.