In the first half of the 18th century, the position of the Catholic Church in the Commonwealth was strengthen and it dominated other Christian denominations. The network of the parishes was expanded, and the accessibility to churches improved. New forms of saints cult as well as other forms of piousness had developed. The preaching played an important role in this process. The preaching in the Commonwealth was not just a Sunday sermon, but above all sermons related to homiletics of the late Baroque, connected with religious ceremonies eg. funerals. The preacher was to work through emotions, the achievements of Baroque rhetoric used, although in the Commonwealth, own solutions were developed to enable effective communication with the recipient representing the Old Polish culture. The size of this impact was significant, as evidenced by numerous prints dating back to that period, but also manuscripts with recorded places of preaching, or impressions from preaching preserved in memoirs or correspondence. It should be emphasized that the sermons not only carved the system of moral values or the piety of the society, but also influenced the ideas of everyday life, the roles of individual and groups in society, as well as the relation to authority.