Medieval Christians believed they had to have more good deeds than bad deeds to get into heaven, which they called a "state of grace." People could earn grace through good behavior and pilgrimages to holy sites called shrines. Shrines were important because people believed praying there could forgive sins and improve their chances of reaching heaven. Relics, items supposedly belonging to saints, were important because the most common relics at shrines were pieces of the cross Jesus was crucified on. Priests would tell scary stories from the Bible and other sources to encourage people to earn grace and stick in peoples' minds.