What the Bible says about Sabbath Kept by Paul
(From Forerunner Commentary)

Acts 13:43-47 Consider the import of what Paul says here. He is to be a light to the Gentiles, showing them the way. What day did he appoint to meet with these people? He had a wonderful opportunity at the end of that first Sabbath, which broke up in a dispute, to tell the people: "Now, wait a minute. Yes, I want you to all come back, but why not just do it tomorrow, on Sunday?" Instead, in order to continue in the grace of God, he had them wait a full week. Then, on the Sabbath, they assembled again. Note that this occurs in the general area of Galatia. John W. Ritenbaugh The Covenants, Grace, and Law (Part Twenty-Four) Related Topics: Christ's Resurrection not On Sunday | Galatians | Keeping the Sabbath | Resurrection of Christ not on Sunday | Sabbath Kept by Paul | Sabbath "Done Away" | Sabbath Keeping | Sunday Worship

Acts 18:4-11 There is no indication anywhere in this context, from chapter 13 through 18, that Paul taught them anything other than that they should keep the Sabbath. If he had taught them anything different, here is another wonderful opportunity for Luke to inject it into the text, but he does not. John W. Ritenbaugh The Covenants, Grace, and Law (Part Twenty-Four) Related Topics: Sabbath | Sabbath Kept by Paul | Sabbath "Done Away" | Sabbath Keeping