Without extended, concentrated prayer, the ministry of the Word withers. And when the ministry of the Word declines, faith (Rom. 10:17; Gal. 3:2, 5) and holiness (John 17:17) decline. Activity may continue, but life and power and fruitfulness fade away. Therefore, whatever opposes prayer opposes the whole work of ministry.
John PiperWhat defines us as Christians is not most profoundly that we have come to know him but that he took note of us and made us his own.
John PiperMarriage is not mainly about prospering economically. It is mainly about displaying the covenant keeping love between Christ and his Church
John Piper