Why do Christians worship on Sunday instead of Saturday?

The practice of Christian worship on Sunday is rooted in the resurrection of Jesus, which took place on the first day of the week. Early Christians began to gather on this day, referring to it as the Lord's Day, as indicated in Revelation 1:10. This shift from the traditional Jewish Sabbath (Saturday) to Sunday emphasizes not a reinstatement of the Sabbath law, but a celebration of the new covenant established through Christ. Thus, Sunday is not a Sabbath observance in the traditional sense but rather a day set aside for worship and fellowship, reflecting the freedom Christians have in Christ as their true rest.