Debteras are usually chosen from families of other debteras, and are trained from childhood as scribes and as cantors. They are often taught traditional medicine and lay rites as well. While studying, they often live by begging, retailing, or practicing traditional medicine. The main purpose for their studies, however, is written and oral lore pertaining to religious functions, and the test for graduation is memorizing the psalter. Before services, they bathe and don white clothing, turbans, and a loose striped over-garment called a shamma. Debteras carry prayer sticks to the service, where they sing, dance, and play drums and sistra outside the church or the synagogue during religious services.
Among the Beta Israel
Among the Beta Israel, the status of debtera is a milestone in the study to become a kahen. Unlike fully-fledged kahens, who perform none of the functions of the debtera, debteras are closer to the laypeople, often serving as intermediaries between them and the clergy. A kahen who gives up his position or is deposed may serve as a debtera.
Among Christians
Kahens and debteras are two separate professions, though it is possible to pursue both roles. Orthodox Tewahedo churches see the division as following the model used by the ancient Israelites. During Lenten services, debteras tap prayer sticks to keep the rhythm. The Ethiopian Church condones the performances of debteras, citing the story in 2 Kings of David dancing at the temple and for Biblical examples. These performances also feature symbols connected to the Passion of Jesus: the sistrum's swaying and the beating of the drums represent Christ's swaying while enduring beatings, and the tapping of the prayer sticks represent the flagellation of Christ.
Religio-Magical Healing
Debteras participate in liturgy as singers and musicians and, outside the Church religio-magical healers by performing as herbalists, astrologers, fortune-tellers etc. Some Ethiopian authors consider these healers as ‘spiritual healers’ whereas, they are purely religio-magical healers. Not all duties taken on by Debteras are condoned by the Ethiopian Church. Many distribute contraceptive herbs to women and perform magic meant to perform contraceptive functions, in contradiction to the Ethiopian Church's teachings. Some are also reputed to study black magic invoking demons alongside their more benevolent official learning. Some Debteras manufacture apotropaic amulets meant to protect the wearer from evil spirits. These amulets are often made of silver and are noted for their use against the evil eye or buda and against zār spirits. They may also study a variety of anti-magic invocations, prayers, and exorcisms. These exorcisms may include prayers, blessing of holy water, burning of roots, and incantations from a Magic Star Book. Some amulets may take the form of small scrolls kept in pouches or similar containers, made from the skin of a sacrificed goat or lamb whose blood is used to ritually purify the intended owner. Some practice astrology, by giving unlucky people new stars by changing their names. This may be considered "cheating" by the locals, however. Some Debteras have also been noted to use jimsonweed to cause hallucinations. A debtera may charge a fee for his charms, exorcisms, and astrological practices, but not liturgical activities. Not all of the Debteras duties and cures are supernatural. Debteras place scarecrows in farm fields to protect them and shave heads to prevent head louse outbreaks. Before the 1974 revolution, nobles would often hire Debteras to educate their children. A major theological difference in the healing practices of kahens and debteras is that for kahens, sin versus virtue or evil spirits versus God is the basis for any sickness and healing. Therefore, they prescribe prayer, holy water, baptism, fasting, and penance as a remedy. For the debteras it is evil spirit versus human beings; almost all the sickness are possession of evil spirits or caused by evil spirits, therefore, prayer and holy water become the integral part of any ritualistic religious healing ceremony. Besides these, kitab or amulets are also prepared and give by them to be worn to wade away the evil spirits and the buda. On the other hand, the priests use the practice of confession, fasting, penance and Church attendance as a means of healing together with some sort of advice and guidance. The soul-father, called yenafs abbat, is a kind of family spiritual-doctor, common in many places makes frequent visits to the home and performs services as required.
