Streszczenie:
On the basis of John Paul II’s Apostolic Letter Dies Domini the article says that Sunday is the Resurrected Christ’s day. Reflection on this issue shows it as the first day of the week, as the day of the new creation, as a promise of eternity; it is also the day of Christ-Light; the day of the Holy Ghost’s gift as well as the day of faith and an irreplaceable day in the life of a Christian. The above statements have justification in numerous Biblical pronouncements and in the Church writers’ theological reflection.