What place has the Sabbath in the work of salvation?

Answer

"Moreover also I gave them My Sabbaths, to be a sign between Me and them, that they might know that I
am the Lord that sanctify them." Eze. 20: 12.

For whom did Christ suffer all these things?
Had the Lord spoken regarding the Sabbath previous to this time?
Do Protestant writers acknowledge the same?
How is this great and dreadful day described in this same prophecy?
How perfect would God have us become?
What is our duty toward the outcast and wandering?
What does Paul say God has prepared for His people?

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