'Memorial' in the Bible

"And this day will become a memorial for you, and you will celebrate it as a religious feast for Yahweh throughout your generations; you will celebrate it as a lasting statute.

And it will be as a sign on your hand and as a memorial between your eyes so that the law of Yahweh will be in your mouth, that with a strong hand Yahweh brought you out from Egypt.

And Yahweh said to Moses, "Write this [as] a memorial in the scroll and {recite it in the hearing of} Joshua, because I will utterly blot out the remembrance of Amalek from under the heavens."

And Moses wrote all the words of Yahweh, and he rose early in the morning, and he built an altar at the base of the mountain and [set up] twelve memorial stones for the twelve tribes of Israel.

And you will take the atonement money from the {Israelites} and give it to the service of the tent of assembly, and it will be as a memorial for the {Israelites} before Yahweh to make atonement for your lives."