Stott writes, “A period of 430 years is mentioned (verse 17), which refers not to the time between Abraham and Moses, but to the duration of the bondage in Egypt (Ex. 12:40; cf. Gn. 15:13; Acts 7:6).” Stott, John R. W. The Message of the Galatians: John R.W. Stott. Leicester, England: Inter-Varsity, 1986. 86. Ben Witherington writes, “This calculation is surely based on Ex. 12:40 LXX which says that the Israelites dwelled in Egypt for this length of time.” Witherington, Ben. Grace in Galatia: a Commentary on St. Paul’s Letter to the Galatians. Grand Rapids, MI: W.B. Eerdmans Pub., 1998. 245.