Even a theologian so little orthodox as Weizsacker says: –

“The moral experience of guilt is too strong to let me say that it can be met by any mere manifestation of grace or of love from God to man – even when that manifestation carries in it the sympathetic suffering of sin’s curse, borne merely in the way of confirming the manifestation and pressing the object-lesson.” “When repentance helps the believer to peace it is not ex opere operato, because he has repented and may now trust grace; but it is because in his repentance he has part and lot in the infinite pain and confession of Christ.”

From Peter Forsyth, The Work Of Christ; Cf. The Work of Christ at Amazon