God's Justice

"The mercy of Christ is not a cheap grace; it does not presume a trivialization of evil. Christ carries in His body and on His soul all the weight of evil, and all its destructive force. He burns and transforms evil through suffering, in the fire of His suffering love.
"The day of vindication and the year of favor meet in the paschal mystery, in Christ died and risen. This is the vindication of God: He Himself, in the person of the Son, suffers for us.
"The more we are touched by the mercy of the Lord, the more we draw closer in solidarity with His suffering and become willing to bear in our flesh 'what is lacking in the afflictions of Christ' (Col 1, 24)."

--Joseph Card. Ratzinger, April 18, 2005