'Festival' in the Bible

On the fifteenth day of this month there will be a festival; unleavened bread is to be eaten for seven days.

“On the day of firstfruits, you are to hold a sacred assembly when you present an offering of new grain to the Lord at your Festival of Weeks; you are not to do any daily work.

“You are to hold a sacred assembly on the fifteenth day of the seventh month; you must not do any daily work. You are to celebrate a seven-day festival for the Lord.