Our failure to hear His voice when we want to is due to the fact that we do not in general want to hear it, that we want it only when we think we need it.

(God's) nature, identity, and overarching purposes are no doubt unchanging. But his intentions with regard to many particular matters that concern individual human beings are not. This does not diminish him. Far from it. He would be a lesser God if he could not change his intentions when he thinks it is appropriate.

And God has set up prayer in such a way that, if you want to explain it away, you can. That's the human mind. God set it up like that for a reason, which is this: God ordained that people should be governed in the end by what they want.

Prayer is talking with God about what we are doing together.