'Seventh' in the Bible
So all the men of Israel were assembled in the king’s presence at the festival; this was in the seventh month.
On the twenty-third day of the seventh month he sent the people away to their tents, rejoicing and with happy hearts for the goodness the Lord had done for David, for Solomon, and for His people Israel.
Then, in the seventh year, Jehoiada summoned his courage and took the commanders of hundreds into a covenant with him: Azariah son of Jeroham, Ishmael son of Jehohanan, Azariah son of Obed, Maaseiah son of Adaiah, and Elishaphat son of Zichri.
In the third month they began building up the piles, and they finished in the seventh month.