A 'month,' as in Genesis 29, signifies the end of an earlier state and the beginning of a following state, thus a new state. 'A month' signifies a full state.

(References: Arcana Coelestia 3814)

9197. 'For you were sojourners in the land of Egypt' means that they had been protected from falsities and evils when they were molested by those from hell. This is clear from what was stated about the affliction and oppression of the children of Israel in Egypt, about the protection of them, and at length about their being brought out from there, in Chapters 7-11, 13, 14 of Exodus. There it was shown that affliction and oppression of the children of Israel in Egypt meant molestation by those from hell, before the Lord's Coming, of faithful believers who belonged to the spiritual Church, and that protecting the children of Israel and bringing them out of the land of Egypt meant the protection and deliverance by the Lord - when He was in the world, and when He rose again - of those who belonged to the spiritual Church. But to explain these particular matters again here would take far too long. See what has been shown about them in the Chapters of Exodus mentioned above, in particular what appears in 6854, 6914, 7035, 7091, 7474, 7828, 7932, 8018, 8054, 8099, 8159, 8321.