I recently had to write a paper on whether or not Sabbath observance is binding for new covenant believers today. I want to share two quotes with you that I found to be useful in forming my persuasion:

The first is by Andrew Shead from an article on “Sabbath” in the New Dictionary of Biblical Theology:

We have said nothing about the Christian Sunday since we are convinced that there is no theological connection between Sabbath and Sunday, despite occasional attempts to prove the contrary (e.g. R. T. Beckwith and W. Stott, This Is the Day). There are hints in the NT that the first day of the week was set aside for evening worship, including the Lord’s Supper (Acts 20:7; 1 Cor. 16:2); Revelation 1:10 refers to “the Lord’s Day”. There is, however, absolutely no indication either that the “first day” replaced the “Sabbath day” in practice (the first Jewish [750] Christians continued to attend the synagogue on the Sabbath), or that there was a transfer of Sabbath theology to Sunday worship. The Sabbath was a day of rest rather than a day of worship, and Sunday became a day of worship but was not initially a day of rest. Regularity, for which the seven-day week provided a ready-made framework, distinguishes (Sunday) worship (e.g. Heb. 10:25); completion, which was (and is) a final goal, distinguishes the Seventh Day. The Sabbath day, then, was a sign of this eschatological rest, whereas Sunday is not presented in the NT as a sign of anything, despite its connection to the resurrection. It is simply a well-chosen day upon which to gather to encourage one another in daily, unceasing striving to enter the Sabbath rest (Heb. 4:11). The only gathering which can truly be described as sabbatical is the gathering of the bond-servants who will reign with the Lamb for ever in the new creation (Rev. 22:3–6). (pgs. 749-750)

The second is from A.T. Lincoln, who wrote a chapter in From Sabbath to Lord’s Day called “From Sabbath to Lord’s Day: a Biblical and Theological Perspective”:

God’s concern for the whole person and for all His creatures being able to have regular rest from their work surely instructs us that although the literal Sabbath day of rest has been abrogated and has not been transferred to Sunday, we should share this concern for regular periods of rest both for ourselves and for others in our society. From this perspective this essay is not advocating that Christians should not rest on Sunday. Rather its position suggests that they should take regular rest, that this rest can be any day or extended part of a day, including Sunday, but that there is no biblical or compelling theological reason why it has to be Sunday. (pg. 404)