God has given us prayer as a wartime walkie-talkie so that we can call headquarters for everything we need as the kingdom of Christ advances in the world. Prayer gives us the significance of front-line forces, and gives God the glory of a limitless Provider. The one who gives the power gets the glory. Thus prayer safeguards the supremacy of God in missions while linking us with endless grace for every need.
John PiperDarkness comes. In the middle of it, the future looks blank. The temptation to quit is huge. Don't. You are in good company... You will argue with yourself that there is no way forward. But with God, nothing is impossible. He has more ropes and ladders and tunnels out of pits than you can conceive. Wait. Pray without ceasing. Hope.
John PiperWhen I pray for revival I pray first for the most radical thing: The utter devotion and allegiance of your hearts to Christ. That you would love Him so deeply and long for Him so passionately that His coming would be your great hope, and death would be gain, and life would be for Christ and His kingdom.
John PiperGod's greatest interest is to glorify the wealth of His grace by making sinners happy in Him.
John Piper