'Second in command' in the Bible

Pharaoh had him ride in the chariot used by his second-in-command, and they cried out before him, "Kneel down!" So he placed him over all the land of Egypt.

Zikri, an Ephraimite warrior, killed the king's son Maaseiah, Azrikam, the supervisor of the palace, and Elkanah, the king's second-in-command.

Joel son of Zicri was the officer in charge of them, and Judah son of Hassenuah was second-in-command over the city.