'Seventh' in the Bible

So the priests, the Levites, the gatekeepers, the singers, some of the people, the temple servants, along with all Israel, lived in their cities.And when the seventh month came, the sons (descendants) of Israel (Jacob) were in their cities.

So Ezra the priest brought the Law before the assembly of men, women and all who could listen with understanding, on the first day of the seventh month.

They found written in the Law how the Lord had commanded through Moses that the Israelites should live in booths (huts) during the feast of the seventh month.

As for the peoples of the land who bring merchandise or any grain on the Sabbath day to sell, we will not buy from them on the Sabbath or on a holy day; and we will give up raising crops during the seventh year [leaving the land uncultivated], and forgive every debt.