'Commemoration' in the Bible

“Tell the Israelites: In the seventh month, on the first day of the month, you are to have a day of complete rest, commemoration, and joyful shouting—a sacred assembly.

that for four days out of every year the Israeli women would go to mourn the daughter of Jephthah the Gileadite in commemoration.

So these days were to be remembered and celebrated throughout every generation, every family, every province and every city; and these days of Purim were not to cease from among the Jews, nor their memory fade from their descendants.