God extends his grace to his people (and mankind in general) when he destroys the wicked, because in destroying the wicked, he is averting their evil works that so plague God's children and mankind in general. When he maims and kills cultists and theological liberals, he prevents the spread of heretical doctrine that damns souls...God's judgment - not his favor - leads the world to righteousness. We should petition God's judgment on the wicked because judgment is a form of grace.
Andrew Sandlin