I think he’s praising the Lord. After all, he’s Catholic like Daredevil is, but not as devoted as Matt is. Frank tried to become a Catholic Priest, but could never forgive those who do evil knowing of just how intent is their evil and how insincere their repentance is. Good-hearted people everywhere do deserve forgiveness and redemption. But there are those who do evil and are highly set in their evil ways who do deserve punishment worse than a prison cell. That’s where Frank comes in. What better way to deal with the wicked than punishing them with death instead of being incarcerated alive, which Matt would rather “see” criminals be in rather than have them get killed by Frank.