If you are living in a Muslim country then you may be interested in the following verses from the Qur'an:
"And certainly you have known those among you who exceeded the limits of the Sabbath, so We said to them: Be (as) apes, despised and hated." Sura 2:65.
"O you who have been given the Book! believe that which We have revealed, verifying what you have, before We alter faces then turn them on their backs, or curse them as We cursed the violaters of the Sabbath, and the command of Allah shall be executed." Sura 4:47.
On the basis that "Allah" curses those who break the Sabbath can we then assume that Islam should promote Sabbath-keeping?
The Preparation Day was the day before the Sabbath and was used to prepare for the Sabbath. See Mark 15:42 "And now when the even was come, because it was the preparation, that is, the day before the sabbath," Therefore, Friday. The word Friday does not appear in the Bible but we do know that it was the sixth day of the week. See Exod. 16:5 "And it shall come to pass, that on the sixth day they shall prepare [that] which they bring in; and it shall be twice as much as they gather daily."
what are you asking really? he rested on the seventh day from all his work. my God spoke and shaped and fashioned for six days. he could have ended there but he put one day aside.....a day of rest and reflection. that is what the sabbath is... a day to reflect on how God has worked in your life throughout the previous six days. it is an awesome blessing.