The document defines various religious terms across different categories:
- Catacombs were ancient underground burial places for early Christians.
- The Crusades were holy wars undertaken by Christians to retake the Holy Land from Muslims.
- The Great Schism was a tragic split in the Catholic Church from 1378-1417 where two bishops each claimed to be the true pope.
- Lent is the liturgical time of preparation for Easter beginning on Ash Wednesday through Holy Thursday.