Exodus 12:40

Four hundred and thirty years] This agrees with the prophetical statement in Genesis 15:13. But the Samaritan text of the OT. and LXX after the words 'in Egypt' here add 'and in Canaan,' thus making the 430 years run from the immigration of Abraham into Canaan, and reducing the stay in Egypt after the immigration of Jacob to 215 years. St. Paul accepts the LXX chronology (see Galatians 3:17), and it is supported by the genealogy in Exodus 6:14, which allows only four generations between Jacob and the father of Moses. But it is difficult to believe that the descendants of Jacob could have increased so much in 215 years, and there is reason to think that the genealogical table in Exodus 6 has been abridged: see on Exodus 6:20. On the whole, it seems more reasonable to accept the reading of the Heb. text represented by the English version, and understand the 430 years as running from the descent of Jacob into Egypt.