Does that include when they recorded Scripture?
Most of the writers of Scripture surely were Jewish, including every writer of the NT, likely apart from Luke, it would seem.
Sorry, Gerhard Ebersoehn. You simply are searching for a distinction that is not there, and that Scripture does not support, as the Scriptures I quoted previously would seem to suggest.
And as to how Jesus could partake of the Passover meal (thus fulfilling Scripture) and yet be crucified (as Our Passover) on the same Jewish day (again fulfilling the Scripture), I have already made multiple posts on the BB, regarding the fulfilling of the phrase, found in the OT of "between the evenings," and how that was when the Passover Lamb was to be slain, and the fact that that phrase did not even seem to have any import attached to it, until our Lord was in fact, 'killed' on 14 Nisan (or Abib), just as the Scripture demands. For over 1500 years, this merely seemed to be an oddity of wording, to all except the LORD, who gave this prophetic command.
Look 'em up, in the 'Search/Advanced Search' mode on the BB, for unfortunately, I do not have the time to do so, and give the links, at the moment.
Ed