This was originally part of [this question](https://christianity.stackexchange.com/questions/1478/do-we-have-free-will-or-is-it-an-illusion) However, it's really a separate line of logic (and therefore a different question, imo). If others prefer, I can remerge this into the original.

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God is omniscient. He truly, literally knows everything. God knows whether or not I will sin. God can (and does) direct certain people to prevent them from choosing one way or another. 

[Exodus 4:21 (NIV)](http://www.biblegateway.com/passage/?search=Exodus%204:21&version=NIV)

> 
> The LORD said to Moses, “When you return to Egypt, see that you perform before Pharaoh all the wonders I have given you the power to do. But I will harden his heart so that he will not let the people go.
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Clearly, this is an instance where God stepped in and prevent Pharaoh from making the decision. 

Since he controls decisions and knows what decisions I will make, do I truly have free will? Or do I only have free will in the inconsequential things (which isn't really free will, after all)?