Esther 9:28 (ESV)

28 that these days should be remembered and kept throughout every generation, in every clan, province, and city, and that these days of Purim should never fall into disuse among the Jews, nor should the commemoration of these days cease among their descendants.

This verse emphasizes the universality and permanence of the obligation to celebrate the Purim feast. For the people of God, it is of critical importance to tell to the coming generation the glorious deeds of the Lord, so that they should set their hope in God and not forget the works of God, but keep his commandments (Psalm 78:4, Psalm 78:7).