WHY do we pray? There are two things I must say about this question.
1) For me, there is no satisfactory answer. For years now, I’ve meditated answers from renowned Bible teachers and theologians — and all the answers come up short. I tend to agree with the atheists: if God is omniscient and infinitely benevolent, then why do we need to pray?
2) The second part is critical. The effect of not finding an adequate answer to the question WHY is… disaster: we stop praying. If you ask why too much, you will conclude there ought to be no need for prayer. Regardless of the “soundness” of reasoning, stopping praying is soundly adverse.
God doesn’t bother to explain the WHY of prayer. He simply commands us to pray. And the weight of scriptural evidence implies that certain blessings won’t happen if we don’t pray. I’m not denying God’s unquestioned sovereignty. There’s an uncomfortable tension here that I’m comfortable with. I may never resolve the WHY, but I have decided to never abandon the WHAT*.
Just pray. Don’t look for explanations any more than you would look for an explanation of falling in love. Scientists try to reduce romance to hormones, to evolutionary theory, to getting the best mate in order to pass on genes — oh brother! talk about deficient and boring reasoning. I’ve noticed that atheists don’t stop falling in love just because there’s no adequate explanation.
Prayer is falling in love with Jesus. It’s your relationship with Him. It also accomplishes powerful things in the universe. But you don’t get your every whim. You trust God to exercise His discretion. When you align your prayers with the Bible, you can be confident that He will answer (that is faith). When it doesn’t seem like His answer is best, we can trust that He will not defraud us.
*It is my experience in 33 years of Christianity that the theologians who are strong on emphasizing God’s sovereignty, don’t pray. While they are right about His sovereignty, they are wrong to disobey the Bible’s admonition to pray.