Do Protestant writers acknowledge the same?

Answer

They do.
NOTE - "IS there no express commandment for observing the first day of the week as Sabbath,
instead of the seventh day?-None whatever. Neither Christ, nor His apostles, nor the first Christians
celebrated the first day of the week instead of the seventh as the Sabbath."-New York Weekly Tribune,
May 24, 1900.
"The Scriptures nowhere call the first day of the week the Sabbath. . . . There is no Scriptural
authority for so doing, nor of course any Scriptural obligation." The Watchman (Baptist).
"The observance of the first instead of the seventh day rests on the testimony of the church, and
the church alone.' -- Hobart Church News, July 2, 1894.
For additional testimonies, see reading on page 146.

14. Who are the disciples of Jesus, and what gracious work does the truth do for those who receive it?
How was the fourth kingdom represented?
That there might be no misunderstanding, what did Moses do?
Did Christ have anything to do with creation and the making of the Sabbath?
Do the Scriptures indicate that there will he violence manifested in this conflict?
How did Christ Himself say He would come?
What is Christ's message to the last church?

Questions & Answers are from the book Bible Readings for the Home Circle