Christians are Sunday people, Ignatius says. What does that mean? Before we ask ourselves how we “observe Sunday”, we have to consider what we Christians actually celebrate on Sunday. The real and first reason for celebrating Sunday lies in the fact that on this day Christ rose from the dead. In doing so, he inaugurated a new age. For the first time someone returns fromt the dead and will not die again. For the first time someone has broken the bonds of time that hold us all in captivity. But Jesus did not pass quickly into heaven. He did not simply shed time as one might shed a worn-out garment; on the contrary, he remains with us. He has returned and will never leave us again.
The feast of Sunday is, therefore, above all a profession of faith in the Ressurection. It is a profession of faith that love remains and therefore a profession of faith that life is good. Very early in the history of the Church Christian asked themselves: “Why did the Lord choose this day? What meaning did he intend to convey thereby?” According to Jewish reckoning, Sunday was the first day of the week. It was, therefore, the day on which God created the world. It was the day on which God ended his rest and spoke: “Let there be light” (Gen 1:3).
Sunday is the first day of the week, the day of creation. That means, then, that Sunday is also the day on which we give thanks for creation. In our technological world, this has acquired a special meaning. Creation has been given us by God as our living space, as the scene of our labor and our leisure, in which we find both the necessities and the superfluities of life, the beauty of images and sounds, which we need precisely as much as we need food and clothing.
From Zeit fur GottL Zeit fur den Menschen, 1981