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.

Upon what basis has Christ taught us to ask forgiveness?
Of what were the different parts of the image composed?
And how may we know that we love the brethren?
Is there any danger of God's chosen people forgetting Him?
What do the works of God declare?
In religious things, to whom alone are we accountable?
Are God's people free from affliction?

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