Most Christians have an aversion to Passover, either seeing it as “Old Testament,” something Jews do and Christians don’t, or almost an affront to the celebration of Easter.

I mean this with all grace … each of those reactions are errant. The Scriptures are a whole, and without the “Old” or “New” Testaments you simply don’t have the whole counsel of God on the matter of history (or, like I enjoy saying, His-Story). Passover is one of the Feasts, but it is not a Feast of the Jews. The Scriptures say they are Feasts of the LORD.