If God controls our decisions, does this mean we don't have free will? This was originally part of this question  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.



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)


  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.


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)?
From a purely practical standpoint, ie removing all theological considerations for a moment, we have free will. I can decide to get up and have a glass of water right now. I can flex and relax the muscles in my fingers to make a fist or open my hand. Perceptually I am controlling my body, my thoughts, and making decisions. When I interact with other people, I perceive an ability to formulate my responses independently of their interaction with me.
Whether I have complete free will, limited free will, or all my actions are predetermined, I cannot perceive anything beyond this immediate moment, and I cannot perceive active outside interference with my free will, and therefore the only logical way to act is as if I have free will. The many verses in Scripture instructing us to behave, choose, and think certain ways seems to back this up - for example:

Jos 24:15 NIV  But if serving the LORD seems undesirable to you, then choose for yourselves this day whom you will serve, whether the gods your forefathers served beyond the River, or the gods of the Amorites, in whose land you are living. But as for me and my household, we will serve the LORD.&quot;
Pro 1:10 NIV  My son, if sinners entice you, do not give in to them.

And yes, I am aware of other passages which support predestination and would seem to contra-indicate free will. My only point is regardless of the flow of time and causality from God's perspective, we don't have this eternal or future perspective available to us and must practice making the best choices assuming that we do have free will.