What does believing that the Church replaced Israel do to end time prophecy?

Believing the Church replaced Israel destroys all end time prophecy. All prophecy is directed solely to the Jew. If the Church has replaced Israel, then Israel no longer holds a prophetic role, and the end-time promises and predictions lose their intended focus.

Les explains that after Emperor Constantine embraced Christianity around 300-315 A.D., the Church exploded in numbers. Oregon, a Church Father in Alexandria, saw the Jewish Temple destroyed and Jews scattered, and concluded God was through with the Jew. He believed the promises to Israel and Abraham were abrogated and given to the Church. Les points out that this replacement theology destroys all end time prophecy, because all prophecy is directed solely to the Jew. If the Church has replaced Israel, then Israel no longer has a prophetic role, and the end-time promises lose their intended focus.

Why does the teaching that God replaced Israel with the Church destroy all end-time prophecy?

If God abrogated His promises to Israel and transferred them to the Church, then end-time prophecy loses its intended recipient, because all prophecy is directed solely to the Jew. Replacing Israel with the Church cancels the prophetic program tied to Israel and leaves no scriptural subject for last-day fulfillment.