"I do not intend to spend any time at all proving to you the general truth that God is sovereign in his world. There is no need; for I know that, if you are a Christian, you believe this already. How do I know that? Because I know that, if you are a Christian, you pray; and the recognition of God's sovereignty is the basis of your prayers. In prayer, you ask for things and give thanks for things. Why? Because you recognize that God is the author and source of all the good that you have had already, and all the good that you hope for in the future. This is the fundamental philosophy of Christian prayer. The prayer of a Christian is not an attempt to force God's hand, but a humble acknowledgment of helplessness and dependence. When we are on our knees, we know that it is not we who control the world; it is not in our power, therefore, to supply our needs by our own independent efforts; every good thing that we desire for ourselves and for others must be sought from God, and will come, if it comes at all, as a gift from his hands."
—J.I. Packer, Evangelism and the Sovereignty of God