'Seven' in the Bible

And there was a prophetess, Anna the daughter of Phanuel of the tribe of Asher (she was advanced {in years}, having lived with [her] husband seven years {after her marriage},

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

Then it goes and brings along seven other spirits more evil than itself, and [they] go in [and] live there. And the last [state] of that person becomes worse than the first!"

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

Now there were seven brothers, and the first took a wife [and] died childless,

and the third took her, and likewise also the seven did not leave children and died.

Therefore in the resurrection, the woman--whose wife will she be? For the seven had her [as] wife."