Now on the first day of the week, very early in the morning, they, and certain other women with them, came to the tomb bringing the spices which they had prepared. But they found the stone rolled away from the tomb.
Luke 24:1-2

Easter is why Christians worship on Sunday. Ever since Moses delivered God’s law to Israel, Saturday, the seventh day of the week was the day of worship, the Sabbath. The Sabbath was not initiated at the time of the giving of the law, nor was it exclusively for Israel. The Sabbath was established at creation when God “rested” from His labor of creation. The Sabbath was mentioned in Exodus 16, four chapters before the giving of the law. When the Sabbath Law was given as the fourth of the Ten Commandments, the command began with the word “remember.” It was not new. Those who lived under the law “worked,” and then rested…

Jesus rose from the dead on Sunday, the first day of the week. From the time the New Testament was written, Christian worship was on Sunday, the “Lord’s Day”(1 Corinthians 16:1-2, Acts 20:7, Revelation 1:10). Why the change? To commemorate the resurrection of Jesus. Those under grace find “rest” in Christ, and then give attention to good works—not to gain or retain salvation, but because we have received it by Grace alone, through faith alone, in Christ alone!

The day was changed. The Sabbath remains. Let us honor God by keeping His Sabbath commandment and honor Christ Jesus by commemorating His resurrection every Lord’s Day until we enter into the eternal Sabbath Rest, in Heaven.