The Devil's Advocate (strengthener of faith) - that's the title of the Catholic Church

Canonization (dead reckoning as a saint) and the beatification (dead reckoning to the ranks of the blessed) in the Catholic Church can not do without the presence of advocatus diaboli - the so-called devil's advocate. Officially, this position is called a strengthener of faith.

The task of the devil's advocate - to bring all possible arguments why the dead do not need to canonize or beatified. For example, to prove that by doing good deeds, or to perform a miracle, the future saint was not guided by faith in God, and their selfish motives. Until 1983, no act of canonization and beatification could not be recognized as legitimate, if the process was not present devil's advocate and his opponent - the lawyer of God (advocatus Dei).

via factroom.ru