John Wesley on Romans 3:25

Whom God hath set forth - Before angels and men. A propitiation - To appease an offended God. But if, as some teach, God never was offended, there was no need of this propitiation. And, if so, Christ died in vain. To declare his righteousness - To demonstrate not only his clemency, but his justice; even that vindictive justice whose essential character and principal office is, to punish sin. By the remission of past sins - All the sins antecedent to their believing.