'Reminders' in the Bible

"This pile of stones and the pillar are reminders that I will not pass beyond this pile to come to harm you and that you will not pass beyond this pile and this pillar to come to harm me.

Tie them as reminders on your forearm, bind them on your forehead,

Take these commands to heart and keep them in mind, tying them as reminders on your arm and as bands on your forehead.

Look, I and the sons whom the Lord has given me are reminders and object lessons in Israel, sent from the Lord who commands armies, who lives on Mount Zion.

“Then it will come about on the day of the Lord’s sacrificeThat I will punish the princes and the king’s sonsAnd all who are clothed in [lavish] foreign apparel [reflecting their paganism].

But I think it right, so long as I remain in the body, my present dwelling-place, to arouse you by such reminders.