'Seven' in the Bible

And in that day seven women will put their hands on one man, saying, There will be no need for you to give us food or clothing, only let us go under your name, so that our shame may be taken away.

And the Lord will make the tongue of the Egyptian sea completely dry; and with his burning wind his hand will be stretched out over the River, and it will be parted into seven streams, so that men may go over it with dry feet.

And the light of the moon will be as the light of the sun, and the light of the sun will be seven times greater, as the light of seven days, in the day when the Lord puts oil on the wounds of his people, and makes them well from the blows they have undergone.