Balthasar on Sin and Expiation

"The believer knows that, on the cross, Jesus 'took away the sins of the world.' Guilt cannot simply be blown away; it must be expiated; it must be dissolved in the pain of sorrow for sin and the confession of guilt. We have an embryonic grasp of this, even if what happens on the cross remains infinitely mysterious and can only be accepted in faith."

Hans Urs von Balthasar (Fulness of the Faith)