You will often hear Jews say, with pride, that Judaism rejects a missionary or evangelizing stance. This is true in the narrow sense that Jews do not pursue converts to Judaism, but it is deeply misleading in another. The German Orthodox rabbi, polemicist, and scriptural expositor Rabbi Samson Raphael Hirsch (1808–1888), a towering figure in modern Jewish thought, taught insistently that God brought the “Abrahamitic nation” onto the stage of history for “the salvation of the world through Judaism.” As he wrote in his Torah commentary, this was to be accomplished “by example and admonition,” with the Jews as “God’s...