Catholic bishops' duties are, among others, visiting their respective dioceses and getting to know the state of its parishes, clerics' and parishioners' morals to establish effective control over it, eradicate heresies and promote faith and good morals. During their visits they keep records that are called canonical visitations. Besides lots of information about the churches interiors, liturgical vessels, parish priest and their income, visitations are sources that provide us with a picture of the state of parishioners, otherwise invisible people, primarily those undisciplined and immoral, as seen by the clergy. Visitation also gives information about the customs and violating God's commandments. Those records, namely, canonical visitations of the Đakovo county in the 18th and first half of the 19th century, translated and published by Stjepan Sršan, that hadn't been written about in the scientific literature, will be the main source for this work. In order to understand ecclesiastical practices of the 18th and 19th century catechetical literature will be used in order to explain the five precepts of the Catholic church: (1) the obligation to give up working on Sundays and Feast days, (2) attendance and pious listening to Mass on Sundays and Feast days, (3) the obligation of fasting on certain days and abstaining from meat on Fridays and Saturdays, (4) confession and communion at least once a year, (5) not celebrating weddings in certain liturgical periods. This will be compared with the information given by visitations which then show if and how the ecclesiastical standards were respected in practice. Other remarks made by the parish priest will also be examined, such as carelessness to call the priest forgiving the extreme unction to the sick and baptism of the newborns; the insight will be given about the sometimes problematic behaviour of the midwives, sexual intercourse outside marriage, swearing and excessive drinking. Finally, the thesis will be concluded with the chapter about the ways and means of the discipline methods performed by the spiritual and secular representatives.