One of the first members of Juramidam’s doctrine, João Pereira was born in Porongaba, Ceará, in 1902. Nobody knows the date of his move to Acre but he also joined the Territorial Guard, together with Mestre and Germano, also playing in the barrack’s band as a musician. At the beginning of the 30s he joined Mestre Raimundo Irineu Serra’s mission.

It is said that João Pereira had little hair, was a caboclo and worked as a farmer and carter. He lived in the surroundings of Rio Branco and was married to Maria Franco (Maria Marques Feitosa), mother of Mestre's second wife, Mrs. Raimunda.

João Pereira owns one of the five hinários known as the doctrine’s base. The hinário left by him was entitled “Seis de Janeiro” for having a pungent waltz in celebration to the King’s day. besides these hymns, João Pereira received the hymn that in the Mass is sung standing with four people holding candles around of the table to form a cross (Oh Meu Pai Eterno). He also would have had other hymns, that in a correction by Mestre were withdrawn from the hinário, no more being cultivated.

João Pereira died in 1954. After his passage Mestre separated from his wife Raimunda, who left Acre with all the family. Master Irineu always referred to João Pereira as “the Comfort's General”, for the well being that his hinário transmitted inside the works.