'Reminder' in the Bible

So I approached [my wife] the prophetess, and she conceived and gave birth to a son. Then the Lord said to me, “Name him Maher-shalal-hash-baz [to remind the people of the prophecy];

It will become a visual reminder in the land of Egypt of the Lord who commands armies. When they cry out to the Lord because of oppressors, he will send them a deliverer and defender who will rescue them.

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.

"This will be your reminder that I have spoken the truth: This year you will eat what grows wild, and next year what grows on its own. But the year after that you will plant seed and harvest crops; you will plant vines and consume their produce.

Evergreens will grow in place of thorn bushes, firs will grow in place of nettles; they will be a monument to the Lord, a permanent reminder that will remain.