'Memorial' in the Bible

“Instead of the thorn bush the cypress will come up,And instead of the nettle the myrtle will come up,And it will be a memorial to the Lord,For an everlasting sign which will not be cut off.”

To them I will give in My house and within My walls a memorial,And a name better than that of sons and daughters;I will give them an everlasting name which will not be cut off.