Allan Kardec believed that the ability  to communicate with the spirit world was limited because people did not know how to pray effectively. This conviction inspired him to create a collection of prayers, along with instructions on how to use them appropriately. Many individuals around the world have found these prayers to be an essential tool for positive communication with spirits.

Spiritual practitioners such as Espiritistas, curanderas, Santeros, and santeras often recite and utilize this collective prayer book, which is available in both Spanish and English.