'Sentry' in the Bible

When he was at the Gate of Benjamin, a captain of the guard whose name was Irijah, the son of Shelemiah the son of Hananiah was there; and he seized and arrested Jeremiah the prophet, saying, “You are deserting to join the Chaldeans [of Babylon]!”

But Jeremiah said, “That is a lie! I am not deserting to join the Chaldeans.” But the guard would not listen to him. So Irijah took Jeremiah and brought him to the princes (court officials).