Luke 2:43
When the days of the festival were over, they left for home. The young man Jesus stayed behind in Jerusalem, but his parents did not know it.
Exodus 12:15
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.
2 Chronicles 25:17
After this, King Amaziah of Judah sought some advice and then challenged Jehoahaz' son King Joash of Israel, the grandson of Jehu, telling him, "Come out and let's fight each other!"
2 Chronicles 30:21-23
The Israelis who were present in Jerusalem observed the Festival of Unleavened Bread for seven days with immense gladness, and the descendants of Levi and priests praised the LORD throughout each day, singing mightily to the LORD.