This document discusses various forms of expression in Catholic Christianity, including church architecture, internal features of churches, sacred objects, paintings/frescoes/drawings, sculptures/statues, symbolism, drama, and music in worship. It explains the purpose and importance of each in facilitating Catholic worship, prayer, and expressing beliefs. Key points are that these forms engage people, help tell biblical stories, focus worship/prayer, and convey theological concepts in emotive ways. Differences in Christian views on some forms like sculptures are also noted.