For thousands of years, the Jewish nation has been oppressed in many ways. When tyrannical monarchies and governments wished to attack Judaism, one of the first Divine commandments they banned was ritual circumcision.
During the regime of King Ahab (740 BCE), the Jews were forbidden from circumcising their newborn sons. Elijah the Prophet beseeched G‑d, with fervent zeal, that no rain should fall until the decree was abolished.
G‑d said to the prophet, “You always display zeal, and you have displayed zeal now… from now on, Jews will never perform a circumcision without your participation.”