Deuteronomy 16:8
Eat bread without yeast for six days. Then on the seventh day, hold an assembly to the LORD your God. Don't do any work."
Leviticus 23:36
For seven days, bring offerings made by fire to the LORD. The eighth day is also to be a sacred assembly for you. Bring offerings made by fire to the LORD. It's a sacred assembly. You are not to do any servile work.
Exodus 12:15-16
You are to eat unleavened bread for seven days. On the first day be sure to remove all the leaven from your houses, because any person who eats anything leavened from the first day until the seventh will be cut off from Israel.
Exodus 13:6-8
You are to eat unleavened bread for seven days, and on the seventh day there is to be a festival to the LORD.
Leviticus 23:6-8
On the fifteenth day of that month is the Festival of Unleavened Bread to the LORD. For seven days you are to eat unleavened bread.
Numbers 28:17-19
You are to hold a festival on the fifteenth day of this month for seven days, during which time unleavened bread is to be eaten."
2 Chronicles 7:9
On the day after the festival ended, they convened a solemn assembly, because they had been dedicating the altar for seven days and observing the festival for seven days.
Nehemiah 8:18
and Ezra continued to read from the Book of the Law of God day by day, from the first day through the last. They celebrated for seven days, and on the eighth day they held a solemn assembly according to regulation.
Joel 1:14
Set apart time for a fast! Call a solemn assembly! Gather the elders and everyone living in the land to the Temple of the LORD your God, and cry out to the LORD!"