" Prayer is one of the most important means of grace that we have to strengthen our faith. Prayer is not for God's benefit. We don't pray to give Him information that otherwise He would not have. We don't pray to give God our counsel so as to improve His administration
of the universe. Rather, prayer is for our benefit. It is a God-given way for us to spend time with Him, to praise and thank Him, and to make our requests known to Him. Afterward, when we get up from our knees, we watch the providence of God work in our lives. "

― R.C. Sproul , What Is Faith? (Crucial Questions, #8)