Wieczorek, Krzysztof2023-03-082023-03-082012Roczniki Teologiczne Warszawsko-Praskie, 2012, t. 8, s. 185-204.1643-4870http://theo-logos.pl/xmlui/handle/123456789/4787The reform introduced by the II Vatican Council led to the change of an overall picture of the Church. Reform action contributed to transformations being seen in such outside forms as, for example liturgy, or also determining the generally comprehended place of the Church in contemporary world. In consequence of conciliar restoration there also occurred a need of thorough searching and adapting the legislation of the Church to requirements contemporary world is carrying. Therefore the reform of the Church initiated by John XXIII had to also include the Code of Canon Law being in force so far, promulgate in 1917 by Benedict XV. the Council also affected the shape of provisions referring to the obligation of celebrating Sunday and other commanded feasts formulated later in the book IV of the Code of Canon Law from 1983. Code of Canon Law promulgate in 1983 by John Paul II in the book titled “The sanctifying task of the Church”, is presenting legal norms which mainly constitute the base of deliberations about celebrating the Lord’s Day. Celebrating Sunday from very beginning of the existence of Christian communities was connected with participating in the Eucharist. It is the Eucharist, at the beginning celebrated only on Sundays, that for faithful was making presence of paschal events.plAttribution-NoDerivs 3.0 Polandhttp://creativecommons.org/licenses/by-nd/3.0/pl/niedzielaświęta nakazaneprawo kanoniczneKodeks Prawa KanonicznegoEucharystiasakramentyobowiązekMagisterium Kościołasobór watykański IIsobórSundaycommanded holidayscanon lawEucharistsacramentsświętowaniecelebratingdutyVatican IISecond Vatican CouncilcouncilcelebracjacelebrationArticle