'Seven' in the Bible

Now Anna, a prophetess, was also there. She was a descendant of Phanuel from the tribe of Asher. She was very old, having lived with her husband for seven years after her marriage,

as well as some women who had been healed of evil spirits and illnesses: Mary, also called Magdalene, from whom seven demons had gone out;

Then it goes and brings with it seven other spirits more evil than itself, and they all go in and settle there. And so the final condition of that person is worse than the first."

Even if he sins against you seven times in a day and comes back to you seven times and says, "I repent,' you must forgive him."

Now there were seven brothers. The first one married and died childless.

and the third married her. In the same way, all seven died and left no children.

Now in the resurrection, whose wife will the woman be, since the seven had married her?"