There is debate even among the Jews as to what sabbath is being spoken of. Whether it is the Passover, High Sabbath, or the seventh day sabbath. In the reading of Lev. and what I have read it is the seventh day sabbath as to complete the 50 days there is 7 sabbaths completed. It would always fall on Sunday.
http://www.karaite-korner.org/abib.shtml
I am aware of the debate which is why I wrote, "
If the Jews are correct, ..." Either way, since neither the Father, nor the Son, nor an Apostle changed the Sabbath command to memorialize the resurrection on the first day of the week, it is merely tradition that causes a believer to break Yahweh's command. That is the kind of tradition Yeshua rebuked the Jews for in Matthew 15 & Mark 7.
Any type of sexual activity other than a husband and wife would be fornication, would it not?
If that is the case, then the word "fornication" would include all sexual sins forbidden by the Law of Moses (the Law of Yahweh). So the NT would then be upholding the Law of Moses regarding sexual sins. If you want to include many laws under one word, then I would say that "love" would include the Sabbath command. I would also say, "love YHWH with all your heart" includes the Sabbath command. I would also say, "love thy neighbor" includes the Sabbath command.
I do think that that was his main reason. If not why did he not go to Jerusalem for 3 yrs. Because the scriptures mention things like after the fast for the 'day of atonement' doesn't mean Paul felt that he needed to do these things. Paul said when he was with the Jews or Greek he became as them (not in sin of coarse but in things like food) so that he might bring some to Christ. If it is necessary for the believers in Messiah to do these things to show they are his or for any other reason then Paul lied to the gentile believers in Corinthians.
I can't recall there being a reason given why Paul did not go to Jerusalem for three years. There was no need to go there for the Feasts since he could keep them wherever he was.
Paul never ate unclean meat for the sake of winning gentiles or Greeks. It would have been sin for him to do so.
What are you referring to about the "gentile believers in Corinthians"? If we are to do "these things" out of love for Yahweh and our neighbors, why would that make Paul a liar?