In Haazinu, Moses recites a poem telling the people of Israel that they must give glory to God and be true to God whose ways are just. He instructs them to consult their elders and “remember the days of old.”
Consequently, these days are recalled and observed in every generation: by every family, every province, and every city. And these days of Purim shall never cease among the Jews, and the memory of them shall never perish among their descendants. – Esther 9:28
"Dedication;" the joyous eight-day celebration during which Jews commemorate the victory of the Macabees over the armies of Syria in 165 B.C.E. and the subsequent liberation and rededication of the Temple in Jerusalem.