Exodus 12:40-42

New Catholic Bible

⁴⁰ The children of Israel had lived in Egypt for four hundred and thirty years. ⁴¹ At the end of four hundred and thirty years, exactly to the day, all the hosts of the Lord went up out of Egypt. ⁴² This was a night of vigil unto the Lord, for bringing them out of the land of Egypt. Hence, it must be a night of vigil in honor of the Lord for all the children of Israel, from one generation to the next.