'Seven' in the Bible

There was also a prophetess, Anna the daughter of Phanuel, of the tribe of Asher. She was very old, having been married to her husband for seven years until his death.

and also some women who had been healed of evil spirits and disabilities: Mary (called Magdalene), from whom seven demons had gone out,

Then it goes and brings seven other spirits more evil than itself, and they go in and live there, so the last state of that person is worse than the first."

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

Now there were seven brothers. The first one married a woman and died without children.

and then the third married her, and in this same way all seven died, leaving no children.

In the resurrection, therefore, whose wife will the woman be? For all seven had married her."

Now that very day two of them were on their way to a village called Emmaus, about seven miles from Jerusalem.