Luke 2:43
And having completed the days, in their returning the child Jesus remained in Jerusalem; and Joseph and his mother knew not.
Exodus 12:15
Seven days ye shall eat unleavened; wholly in the first day shall ye turn away leaven in your houses; for all eating leavened and that soul was destroyed from Israel from the first day even to the seventh day.
2 Chronicles 25:17
And Amaziah king of Judah will take counsel, and will send to Joash son of Jehoahaz, son of Jehu, king of Israel, saying, Come, we will see faces.
2 Chronicles 30:21-23
And the sons of Israel, those found in Jerusalem, will do the festival of the unleavened seven days, in great gladness: and the priests and the Levites praising to Jehovah day by day with instruments of strength to Jehovah.