'Memorial' in the Bible

""This day is to be a memorial for you, and you are to celebrate it as a festival to the LORD. You are to celebrate it as a perpetual ordinance from generation to generation.

Then the LORD told Moses, "Write this in a book as a memorial and recite it to Joshua: "I'll certainly wipe out the memory of the Amalekites from under heaven.'"

You are to put the two stones on the shoulder pieces of the ephod as stones of remembrance representing the sons of Israel, and Aaron is to carry their names into the LORD's presence on his two shoulders as a memorial.

You are to take the atonement money from the Israelis and give it for the service of the Tent of Meeting, and it is to be a memorial for the Israelis in the LORD's presence to make atonement for yourselves."