From Moses:  And on the seventh day God finished his work which he had done, and he rested on the seventh day from all his work which he had done (Ge. 2:2 RSV).  And the LORD said to Moses, "Say to the people of Israel,`You shall keep my sabbaths, for this is a sign between me and you throughout your generations, that you may know that I, the LORD, sanctify you. You shall keep the sabbath, because it is holy for you; every one who profanes it shall be put to death; whoever does any work on it, that soul shall be cut off from among his people. Six days shall work be done, but the seventh day is a sabbath of solemn rest, holy to the LORD; whoever does any work on the sabbath day shall be put to death. Therefore the people of Israel shall keep the sabbath, observing the sabbath through- out their generations, as a per- petual covenant. It is a sign for ever between me and the people of Israel that in six days the LORD made heaven and earth, and on the seventh day he rested, and was refreshed (Ex.31:12-17 RSV).

The absolute base for Sabbath observance is the stipulation that God finished His work and rested on the seventh (Sabbath) day. If he did not do this, the basis for the Sabbath is non existent. Genesis (1:16) also tells us that, on the fourth day, he made the stars also. His work was finished on the seventh day, we are told, so that there is no more star making. This sounded reasonable until the advent of science and the instruments that reveal the continuing birth of stars throughout the cosmos.  Take a look at this view revealing a vast region of star making in the constellation Orion, as seen through the .9 meter telescope on Kitt Peak. This is factual and not debatable -- stars are being made this day, by a continuing process. The work of creation was and is not finished.  The same is truly said of what is on the earth also, including man (Adam). We are not the same as humans of a million years past, nor of a million years hence, should we remain then. Yes, as it had a beginning, so also the creation will have an end, but not yet.

And he was saying to them: The Sabbath came into being because of man, and not man because of the Sabbath, so that the son of man is Lord of the Sabbath also (Mk.2:27,28 FNT). And he says to them: Is it permissible on the Sabbaths to do [a] good [thing] or to do evil, to save [a] psyche-life or to kill?  But they keep silence. And having looked around at them with anger, being grieved concerning the hardness of their hearts, he says to the man: Be stretching out the hand. And he stretched out and his hand was restored (Mk.3:4,5 FNT). Therefore it is allowed on the Sabbath to do good (Mt.12:12 FNT). So, when is it lawful to do evil or to kill? And when is it not lawful to do good?  With these words the Lord of the Sabbath makes the Sabbath to be the same as any other day. He did this because he knew God had never rested, as science has now confirmed, and he said so in these words: My father works until now and I [also] work (Jn.5:17 FNT).  Again,  For the Father loves the Son, and shows him all that he himself is doing (Jn.5:20FNT).