In 1332 Ojdula already had a parish church, in that year its priest, Domokos, according to the papal tithe, paid 7 old banals, in 1333 the priest Tamás 3 banals, in 1334 2 old banals. In 1539, Lukács was a parish priest. Its old church was completely destroyed in the earthquake of 1802. According to tradition, it was a Gothic church, and its construction is associated with Miklós Basa. This Gothic church dates back to the 14th century. century parish church may be its successor or reconstructed form. After the earthquake destruction, a new church was built in 1818-19, when Ferenc Ráduly was parish priest, namely with the castle chapel in the former Kún castle forming its sanctuary, for which a spacious nave was built. Its patron saint is Saint Mary Magdalene.

The Roman Catholic Church was consecrated on October 25, 1818 by Péter Kovács, parish priest of Kézdiszentlélek, and solemnly consecrated on May 25, 1929, the fourth Sunday of Easter, by the then Bishop Miklós Kovács Csík-Tusnádiyl in Transylvania , the honor of Saint Mary Magdalene. Today's Roman Catholic Church is on Templom Hill. 19th In the 19th century, the church rebuilt using the stones of Kún Castle proved too small for the congregation, so a new, more spacious wing was built perpendicular to its nave in 1984, during the years of the communist dictatorship. Next to the old church, under the parish priest Antal Fejér, a baroque belfry with an onion dome was built in 1834, the exterior shape of which was later modified.

The monumental Szekler gate that decorates the main entrance of the church was made in 1976 by wood sculptor József Haszmann from Cernatu. The titular dean Kálmán Jakab Fancsali was appointed to Ojdula by the blessed bishop Áron Márton in the autumn of 1976 and since then he has been shepherding the Roman Catholic faithful. According to the confessional division, the number of Catholics in Ojdula is around three thousand, Orthodox around two hundred and there are seventy Adventists. In Kishilib, the proportion of Catholics is fifty percent, but there are also about 70-80 Pentecostals.

It is a Roman Catholic church, but a church existed and exists not only for Hungarian Roman Catholics, but in 1990 a small chapel was also built in the Gypsy settlement Kishilib belonging to Ojdula. The first attempt for the Roma to have a separate church took place in 1979, but the communist authorities did not look kindly on it. Thus, after the foundation was made, the works were prohibited. The mentioned church was built in the "center" of the Gypsy settlement. Before the construction of the Roman Catholic church in Ojdula, Catholic Gypsies attended the large church in the village, but the distance between the church and the Gypsy settlement was approx. two kilometers. Of course, the older Hungarians who live nearby also go to this church.