If God Is Sovereign, Why Pray?

“. . . we are not free to say: “Well, God is in control. He’s sovereign, immutable, and omniscient, so whatever will be will be. There’s no point in praying.” Scripture universally and absolutely denies that conclusion. Instead, it affirms that prayer does effect change. God, in His sovereignty, responds to our prayers.” (R.C. Sproul, The Prayer of the Lord, 118)