A messianic Jewish man, working with this ministry, has answered a Lew White follower aptly below concerning the Lew’s teaching that worshiping on Sunday is pagan…
You stated that worship on Sunday started with Constantine. Gods word seems to tell us a different story.
Act 20:7 NKJV Now on the first day of the week, when the disciples came together to break bread, Paul, ready to depart the next day, spoke to them and continued his message until midnight.
1Co 16:1-3 NKJV Now concerning the collection for the saints, as I have given orders to the churches of Galatia, so you must do also: (2) On the first day of the week let each one of you lay something aside, storing up as he may prosper, that there be no collections when I come. (3) And when I come, whomever you approve by your letters I will send to bear your gift to Jerusalem.
The first day, Sunday, is when the Saints would come and break bread with the disciples. This was done to remember another event.
Joh 20:19 NKJV Then, the same day at evening, being the first day of the week, when the doors were shut where the disciples were assembled, for fear of the Jews, Jesus came and stood in the midst, and said to them, "Peace be with you."
Jesus (Jeshua) Was resurrected on the first day. The Apostles and disciples commemorated that at least from the time of Acts Chapter 20.
We even have quotes from early church fathers who predate Constantine by at least 100 years that say the same thing.
"We keep the eighth day [Sunday] with joyfulness, the day also on which Jesus rose again from the dead" (Letter of Barnabas 15:6–8 [A.D. 74]).
"[T]hose who were brought up in the ancient order of things [i.e. Jews] have come to the possession of a new hope, no longer observing the Sabbath, but living in the observance of the Lord’s day, on which also our life has sprung up again by him and by his death" (Letter to the Magnesians 8 [A.D. 110]).
"But Sunday is the day on which we all hold our common assembly, because it is the first day on which God, having wrought a change in the darkness and matter, made the world; and Jesus Christ our Savior on the same day rose from the dead" (First Apology 67 [A.D. 155]).
So I would question the sources of the articles that you are reading.
On the Topic of different Laws for the Jews and the Gentiles, please, read Acts chapter 15 the early church fathers deal with this very issue. This verse also deals with that issue specifically referring to days of worship.
Col 2:16 NKJV So let no one judge you in food or in drink, or regarding a festival or a new moon or sabbaths,
FYI, there is no reputable Hebrew or Greek scholar that will even refer to the Messiah’s name as "Yahashua."
I hope this helps.
Shalom my friend,