Doug Wilson points out something that should be glaringly obvious, but which I have overlooked:
Virtually all the books of the New Testament have an expectant air about them. They are all waiting for something drastic that will happen soon, and not one of them even mentions the most cataclyismic event in Jewish history — the fall of Jerusalem in A.D. 70 — as being past. That event was the destruction of the old Judaic order and its replacement by the Christian church, the new Israel (Heaven Misplaced, p. 111).
Indeed. How could the destruction of the Temple in 70 A.D. go completely unmentioned in the NT unless it hadn’t happened yet? All the books would therefore predate it.