This is a common misunderstanding. Catholics do not worship on the Sabbath, which according to Jewish law is the last day of the week (Saturday), when God rested from all the work he had done in creation (Gen. 2:2-3). Catholics worship on the Lord’s Day, the first day of the week (Sunday, the eighth day); the day when God said “Let there be light” (Gen. 1:3); the day when Christ rose from the dead; the day when the Holy Spirit came upon the Apostles (Day of Pentecost). The Catechism of the Catholic Church says: “The Church celebrates the day of Christ’s Resurrection on the ‘eighth day,’ Sunday, which is rightly called the Lord’s Day” (CCC 2191).
The early Church did not move the Sabbath from Saturday to Sunday. Instead “The Sabbath, which represented the completion of the first creation, has been replaced by Sunday, which recalls the new creation inaugurated by the Resurrection of Christ” (CCC 2190). Sunday is the day Catholics are bound to keep, not Saturday.
(http://www.catholic.com/quickquestions/did-the-early-church-move-the-sabbath-from-saturday-to-sunday)
Really? Do tell because somebody changed it. Show me the verse in the Bible where it was changed and not some CCC2191. I'll tell you what I find in my Bible. Dan. 7:25 And he shall speak great words against the Most High, and shall wear out the saints of the Most High, and think to change times and laws.
A correction. It wasn't Jews who made the law. God wrote it in stone (signifying permanence). So it is Gods law not the Jews or Hebrews. Romans 7:12 Wherefore the law is holy, and the commandment holy and just and good.