The Pope is the final court of appeal for matters of faith and Church law. (faith.org.uk)
Here we witness the rather thorough triumph of what Lionel Trilling many years ago described as «sincerity and authenticity» as the final court of appeal in «the adversary culture.» (firstthings.com)
For Roman Catholicism the final court of appeal in all moral questions is the Church, which interprets the revealed will of God. (religion-online.org)