Please inform me how the Feasts have been fulfilled - To my knowledge only the Spring Holy Days have been fulfilled... What of the Fall Feasts?
Please Show me the fulfillment of the blessings given by Jacob to his sons (particularly predicted to be fulfilled in the latter days), and all of the blessings that came thereafter as given to the individual tribes...
Please show me particularly the fulfillment of all the prophecies specifically about Joseph/Ephraim (Hosea and Isaiah would be a good place to start).
Please show me the finality of Zachariah.
That’s what was taught in Christendom, up till relatively recently.
Not true. There have always been dissenters that did not embrace the company line of the Roman church, or the subsequent Protestant churches that inherited her errors... Replacement Theology horribly blinded the church for centuries. The only way that Replacement Theology can be true is to flatly ignore OT prophecy entirely, and thereby be free to interpret the NT prophecies however one wants.
OT prophecy shows the path to Christ.
Shows how God made it happen through the Israelite nation and remnant.
Matthew starts with the lineage of the King of Kings.