'Seven' in the Bible

Now it came to pass in the days of Ahasuerus (this is Ahasuerus who reigned from India even unto Ethiopia, over a hundred and seven and twenty provinces),

And when these days were fulfilled, the king made a feast unto all the people that were present in Shushan the palace, both great and small, seven days, in the court of the garden of the king's palace.

On the seventh day, when the heart of the king was merry with wine, he commanded Mehuman, Biztha, Harbona, Bigtha, and Abagtha, Zethar, and Carcas, the seven chamberlains that ministered in the presence of Ahasuerus the king,

and the next unto him were Carshena, Shethar, Admatha, Tarshish, Meres, Marsena, and Memucan, the seven princes of Persia and Media, who saw the king's face, and sat first in the kingdom),

And the maiden pleased him, and she obtained kindness of him; and he speedily gave her her things for purification, with her portions, and the seven maidens who were meet to be given her out of the king's house: and he removed her and her maidens to the best place of the house of the women.

Then were the king's scribes called at that time, in the third month Sivan, on the three and twentieth day thereof; and it was written according to all that Mordecai commanded unto the Jews, and to the satraps, and the governors and princes of the provinces which are from India unto Ethiopia, a hundred twenty and seven provinces, unto every province according to the writing thereof, and unto every people after their language, and to the Jews according to their writing, and according to their language.

And he sent letters unto all the Jews, to the hundred twenty and seven provinces of the kingdom of Ahasuerus, with words of peace and truth,