'Reminder' in the Bible

so that this may be a reminder among you. When your children ask in the future, saying, '{What do these stones mean to you}?'

And Eliakim son of Hilkiah, who {was in charge of the palace}, came out to him, and Shebna the secretary, and Joah son of Asaph, the reminder.

Then Eliakim son of Hilkiah, who [was] over the {palace}, Shebna the secretary, and Joah son of Asaph, the reminder, came to Hezekiah [with] torn garments and told him the words of Rabshakeh.