God alone is righteous. On the cross this truth is apprehended as our condemnation as sinners. But when we are brought to faith in the death of Christ, we receive the righteousness of God triumphant on the cross in the very place where we receive our own condemnation as sinners. We can then receive justification because we willingly renounce every attempt to establish our own righteousness and allow God alone to be righteous. Thus the only way we can be righteous in the sight of God is by recognizing that he only is righteous, and we ourselves sinners in the totality of our being.