Forgive my denseness, but I don't see how Jn 12:40, at least, says any such thing. In it God is the one that blinds eyes and hardens hearts, and while it may not require exhaustive foreknowledge to do that, it is the same language used by Calvinists to say that we need God to change our minds before we can believe, and if He's doing the changing anyway (before we believe), and if He
knows what He's planning to do (a tenet of both Calvinism and Open Theism), and if He always
is able to accomplish what He decides to do (also a tenet of both), then how can you say it is NOT Calvinism, at least based on Jn 12:40?
I'll admit to some serious misgivings about whether I can understand exactly what Rom 9 is saying, but Clete's description
above seems reasonable, if incomplete. But if Clete is correct, then Rom 9 doesn't really address exhaustive, definite foreknowledge at all--it just allows for God to do one thing or another depending on what a nation does.
Those two ideas, that God causes the blindness and hardheartedness on the one hand and deals with nations according to their autonomous actions on the other, are antithetical to each other on the surface in terms of what "exhaustive, definite foreknowledge" means ("God knows the future because He does the action" or "God knows the future because He sees the action"). Only the former is Calvinistic. The latter is Arminian. The solution to the obviously false dichotomy is likely Open Theism, from what I understand of it--that God deals with people/nations according to what they do, but He still is able to fulfill any plans He decides don't depend on anyone else's actions.
And I believe that God CAN and DOES harden people's hearts, though He uses means to do so which cause the effect through the people's own wills. Pharaoh's case in point, God hardened Pharaoh's heart and he hardened his own heart, and I think I can see in a little way how God did that. For one thing, He gave Moses miracles (sounds better than magic tricks, but possibly the same effect) that were easy to replicate for Pharaoh's magicians. Until the lice. And by then, Pharaoh was accustomed to hardening his heart because of the magician's duplicative tricks, and this was just one small step beyond that (Ex 8:19).
But I'm getting a little off topic. To bring it back home:
I think God does harden people's hearts, but I question whether He plans long centuries before-hand which ones He's going to harden. Thus a preterist view shrinks the timescale of the intentions to harden or bring other judgment to either the generation God is dealing with ([Mat 24:34 KJV] Verily I say unto you,
This generation shall not pass, till all these things be fulfilled.), or at most 3 or 4 generations, at least in the large majority of cases.
[Num 14:18 KJV] The LORD [is] longsuffering, and of great mercy, forgiving iniquity and transgression, and by no means clearing [the guilty], visiting the iniquity of the fathers upon the children unto the third and fourth [generation].
[Exo 20:5 KJV] Thou shalt not bow down thyself to them, nor serve them: for I the LORD thy God [am] a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth [generation] of them that hate me; |
And God does turn the hearts of kings like rivers ([Pro 21:1 KJV] The king's heart [is] in the hand of the LORD, [as] the rivers of water: he turneth it whithersoever he will.), but there are some interesting things to note about that. 1. that rivers don't (usually) turn on a dime, and 2. the effect is most often felt just downstream a little. If you've ever tried to block a small stream, you can see that it is possible to do so, but the effort is not trivial--you put up dams and dig channels to make it go where you want, and the faster the change, the more effort (and materials) required. To make the turn occur at the proper point, you have to start the dams and channels upstream a bit, but only a bit. And eventually the stream rejoins its previous course. (Think of turning the Mississippi river and trying to make it dump into the Pacific Ocean).
In terms of time, if God wanted to do something to somebody that had not yet been born, nor had his parents or grand or great-grand parents (etc.) been born, and thus nobody had done anything to deserve that thing (good or bad), prophecies concerning that somebody would mostly be unappreciated by the people that received them.