Why is Sunday the first day of the week? Sunday is undoubtedly a special day for Christians. It is then Jesus Christ He rose from the dead. In Catholicism, Sunday is considered a holy day on which we are commanded to rest and worship God. However, not every faction of Christianity recognizes Sunday as the first day of the week. In Judaism, Saturday remains the holy day.
The biblical account of the creation of the world tells us that on the seventh day God rested. Except that according to the Bible, the seventh day of the week is the Sabbath, or Saturday. "For in six days did the Lord sky, the earth, the sea, and all that is in them, and on the seventh day he rested. Therefore the Lord blessed the Sabbath day and declared it holy," we read in the Book of Exodus. Following this line of thinking, the first day of the week must be Sunday, since it follows Saturday, which according to the Bible is the seventh day of the week.
Another reason Catholics recognize Sunday as the first day of the week is that it is when Jesus Christ has risen from the dead. Jesus, by rising from the dead gave people hope for eternal life. He showed that from now on death is no longer the end, but the beginning. This beginning is the key word. It is in honor of the resurrection Christ, we may call Sunday the first day of the week, or the beginning.