'Seven' in the Bible

Seven months after the Israelis had settled in their cities, they all gathered together in Jerusalem as a united body.

Then they observed the Festival of Unleavened Bread for seven days with joy, because the LORD had made them glad, turning the heart of the king of Assyria toward them and strengthening them for their work on the Temple of God, the God of Israel.

You have authority to act for the king and for his Council of Seven to conduct an inquiry concerning Judah and Jerusalem in accordance with the Law of your God, which is in your possession.