They are the Holy Convocations of YHWH ... They are not the Feasts of the Jews, but of YHWH
Leviticus 23:4
“Speak to the Israelites and say to them: ‘These are my appointed feasts, the appointed feasts of YHWH, which you are to proclaim as sacred assemblies. “‘There are six days when you may work, but the seventh day is a Sabbath of rest, a day of sacred assembly. You are not to do any work; wherever you live, it is a Sabbath to YHWH. “‘These are YHWH’s appointed feasts, the sacred assemblies you are to proclaim at their appointed times:
A common problem during the translation of the Hebrew Scriptures into Greek was that the translators, though fluent in Hebrew and Greek were not Jews and inserted words or passages into the text to clarify their intent.
Imagine the Hebrew Apostle John writing to his fellow Hebrews and saying the following:
John 2:13
When it was almost time for the Jewish Passover, Jesus went up to Jerusalem.
John 7:2
But when the Jewish Feast of Tabernacles was near,
Now why would a Jewish writer, writing for the mostly Hebrew church, insert the word Jewish into the text? He and his audience grew up with the Feasts. They knew that they were the Feasts of YHWH because the Torah told them so.
Besides, there was no such word as ‘Jew’ during those times.
Note: All of the above are excerpts from ... Feasts of YHWH - The Restoration of the Bride of Messiah