There is nothing in the New Testament that says that Christians must keep the Jewish Sabbath. In the Sermon on the Mount in Matthew and the Sermon on the Plain in Luke, Jesus made many Old Testament teachings stronger but He says nothing about the Sabbath. The same goes for the Parables of Jesus in all four Gospels. In Acts 15, the Apostles lay down the conditions for non-Jews becoming Christians. Observing the Jewish Sabbath isn't one of the conditions.
Sparbud, you talk about how we are to "enter heaven." In the Parable of the Sheep and Goats, Jesus tells us who will be saved and who will be condemned. Jesus doesn't say that anyone will be condemned for not keeping Old Testament law. Instead, He says that the condemned will be those who lack compassion for their fellows.
Besides these problems, look at what the Sabbath Commandment actually says. The Sabbath Commandment is labor law, it says that everyone gets a day off. The Commandment says nothing about going to church. The Commandment cannot be satisfied by going to church on Saturday.
Again with the nothing about going to church. Seriously? What do you think Jesus and the disciples did every Sabbath? It wasn't called "church" is all. Before the tabernacle in the wilderness was built the patriarch gathered their families before the altars. The head of each family was the one that presided over the sacrifices. The disciples were all getting together every Sabbath after the resurrection. There were some 1st day gatherings--but nothing says they gathered strictly for worship. The did that every Sabbath and they met in the temple and the synagogues and later in homes.
If you read the Sunday gatherings--they were on Saturday night, the beginning of the 1st day of the week starts at sundown Saturday night. That is Jewish start of the days. That is still the start of Sabbath to this day--Sundown Friday night. Why would Jesus make a big deal of the Sabbath in His sermons, or the disciples? That was a given. All Jews kept the Sabbath--there was no getting around it, it wasn't anything they needed to expound on. Jesus tried to get the people to see the Sabbath as it was originally meant. Not burdened down with minutia that the Rabies had introduced.
It was Sat night sundown gathering when Paul preached till midnight. Please don't tell me he preached without ceasing from Sunday morning to midnight! He preached after dinner--which is what breaking bread also means--which would have been after sundown Sat night--the beginning of the 1st day--and he preached until midnight. He went to the boat and traveled that next morning (still Sunday)--if he had kept Sunday, he would not have traveled on that day.
The only time the disciples said something about the Jewish feasts was to say they did not have to be kept ---Jesus had met all requirements as the Sacrificial Lamb. Any feasts (which were also called sabbaths) which pointed to Jesus as the Lamb were done away with at the cross.
There was world war 3 when they said that circumcision no longer had to be done--and you really think, something just as important to them would not have elicited just as much of a fight? But not one word was said about it having been done way with. Sabbath. All anyone has to say is that they don't have any intention if keeping it and that is that. No one has to tell God the why of anything. God knows those who are genuinely misinformed, misguided as was Saul and He is able to, at the right time, send them their own Damascus experience. He knows who those are that simply do not want to turn their lives upside down and change their comfortable routines to comply with God's requests.
In the end--according to Rev.-- it will all come down to worship. Who will worship the beast, or who will worship God. Everyone will be marked--it is all a matter of whose mark one receives--the beasts or God's, for God will seal His own.