In most parts of Britain, you might expect a wry look, at the very least, if you were to brandish an Israeli or American flag – let alone both at the same time. But not in Finchley.

As Bar Ilan University professor Joshua Berman engagingly and convincingly demonstrates in his “Echoes of Egypt” Haggadah, the process by which the Passover story took shape was as a polemic against ...