As noted earlier, the 400 or 430 years is contextually related to when the time is being measured. The number 430 is from the time the Law was given after the promise. Another perspective is that the period began with the confirming of the Abrahamic Covenant with Jacob (Genesis 35:9-12). Yet another is that the period began with the final confirmation of the covenant to Jacob (given in Genesis 46:1-4). Thus, the 430 years went from the end of one era (the Age of Promise) to the beginning of another (the Age of Law). Moreover in Acts 13:20, the 450 years includes the oppression in Egypt (400 years), the wilderness sojourn (40 years), and the Conquest of Canaan under Joshua (10 years).
One needs to be mindful of the surrounding context of the verses and not isolate them. From these contexts the verses show no contradictions. Outside of the context, 400, 430, 450, and even 520 years (see the Bullinger or
The Dake (ugh!) bibles for the calculations), appear contradictory. But none of these issues are doctrinally relevant to say, open theism or Reformed theology. Instead they
are doctrinally relevant to the non-contradictory nature of God's word. That is where one must start. Hence, if there is no contradiction in God's word, how are these verses reconciled? They must be reconciled from their historical-grammatical context. If that method shows no issue, one then looks at other clear teachings to attempt reconciliation. Fortunately, in this case, the historical-grammatical context offers explanations.
What you are doing is building upon supposed contradictions,
sans context, and creating a doctrinal argument. That is incorrect hermeneutics.
In general number counting in the Scriptures is not always an exact form. Just look at the census taking issues. Now you could have quite a bit of fun trying to sort that all out, too. But would that lead a person to conclude that because the numbers don't work out an argument can be made that God did not know the exact procreative goings-on among the Israelites, so He could not predict an exact count? That would be a strained argument at best, proving only that God is a bad mathematician, at worst. :chuckle:
When numbers mean something about doctrinal matters they are overwhelmingly clear in the Scriptures, e.g., seven days of creation, forty days and nights of rain, forty days in the wilderness, three days and rise again, etc.
Now, of you want a real challenge, tell me what is wrong with the numbers shown (calculated by Harold Camping of Family Radio)
here.
If he is correct, we have until the fall of 2011 to get our souls and affairs in order, for the Second Coming is at hand. :chuckle: