'Celebrate' in the Bible

He ordered them to celebrate the fourteenth and fifteenth days of the month Adar every year

as the days on which the Jewish people enjoyed relief from their enemies. It was a month when things turned around for them, from sorrow to joy and from mourning to a holiday. They were to celebrate these days as days of feasting and joy, and they were to send presents to one another and gifts to the poor.

the Jews bound themselves, their descendants, and all who joined with them to a commitment that they would not fail to celebrate these two days each and every year according to the written instructions and according to the time appointed.