'Reminder' in the Bible

So it shall serve as a sign and a reminder on your [left] hand (arm) and as frontlets between your eyes, for by a strong and powerful hand the Lord brought us out of Egypt.”

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];

Now the crown shall become a reminder in the temple of the Lord to Helem, Tobijah, Jedaiah, and Hen the son of Zephaniah.