whom God put forward as a propitiation by his blood, to be received by faith. This was to show God’s righteousness, because in his divine forbearance he had passed over former sins.
25. Whom God hath set forth, etc. The Greek verb, προτίθεναι, means sometimes to determine beforehand, and sometimes to set forth. If the first meaning be taken, Paul refers to the gratuitous mercy of God, in having appointed Christ as our Mediator, that he might appease the Father by the sacrifice of his death: nor is it a small commendation of God’s grace that he...
From all this Paul infers that it is in vain to look for justification by the works of the law, and that it is to be had only by faith, which is the point he has been all along proving, from Rom 1:17, and which he lays down (Rom 3:28) as the summary of his discourse, with a quod erat demonstrandum - which was to be demonstrated.
Commenting on Romans 3:19-31
Is he the God of the Jews only?.... The Jews made their boast of him as such, and would not allow the Gentiles any interest in him: but is he not also of the Gentiles? yes, of the Gentiles also: God is the God both of Jews and Gentiles; not only as the Creator, preserver, and Governor of them, or as he has a right...