How does prayer change an unchangeable God?

Welcome to my life.

The other day I was considering all of the thoughts that I entertain, and wish to tell of, but can find no opportunity to tell. So, here it is your choice. If you wish to know the thoughts that consume - and at times plague me - this is the place to be.

Lately I have been contemplating the power of prayer. How does prayer change an unchangeable God? If God already knows that His mind will be changed, does prayer really change anything at all? Prayer would then be in vain, would it not? But, we know that God does hear our prayers, and prayer does provoke change. Our prayers are heard, and the unchangeable God, who knows the past, present, and future, listens and responds.

It is not an uncommon belief that prayer does not change God's plan, but instead it changes the one who is praying. However, it seems quite evident in the Bible that prayer does change things. But how? This, I do not know. Thus, my thoughts are consumed by attempting to solve the mystery of how prayer works. All I know is that it does work. I will continue to read about the different views on prayer, from the Pentecostals to Predestination in hopes to find the answers, but in the end, nothing will change what my heart will bear witness to. Prayer changes things.