NET

25 God publicly displayed him at his death as the mercy seat accessible through faith. This was to demonstrate his righteousness, because God in his forbearance had passed over the sins previously committed.

Darby

25 whom God has set forth a mercy-seat^D8010, through faith in his blood, for [the] shewing forth of his righteousness, in respect of the passing by^D8011 the sins that had taken place before, through the forbearance of God;

Darby Bible Notes

mercy-seat - I do not think this word can be used for '[a] propitiatory [sacrifice]' or 'propitiation;' it certainly is not the habitual use in the LXX; and we have the two parts of the work of the great day of atonement, here and in ch. 4.25; 'set forth,' here, has a reflexive force; see Note, Heb. 1.3. by - 'In respect of the passing by the sins.' I have hesitated as to using dia with the accusative in this sense here; but on the whole I do not doubt it gives the sense. God had passed by, not brought into judgment, the sins of Old Testament believers; and the accomplishment of the atonement showed His righteousness in this. Now the righteousness is itself shown, and to be relied on.

KJV

25 Whom God hath set forth^K6815[to be] a propitiation through faith in his blood, to declare his righteousness for the remission^K6816of sins that are past, through the forbearance of God;

KJV Bible Notes

set forth: Or, foreordained. remission: Or, passing over.