St. Paul declares in the middle of the Areopagus that God has no need for anything. God has no need for mankind; He creates them out of sheer generosity. According to Monsignor Ronald Knox, the priesthood is also the result of Divine providence. God “could have done without [priests], but he preferred to have, once more, a kind of tool through which his action should express itself. Tools in his hand, that is what we priests were to be.” The Priestly Life is a collection of sixteen retreat presentations that explore the nature and purpose of the priestly profession. The priest is a necessary tool in the economy of salvation. “he lends his hands, to be Christ’s hands, his voice, to be Christ’s voice, his thoughts, to be Christ’s thoughts; there is, there should be, nothing of himself in it from first to last, except where the Church allows him, during two brief intervals of silence, to remember his own intentions before God.”
The Priestly Life is a vigorous assertion of the dignity and obligations of the priesthood, intended to provide encouragement and inspiration to those men called to be alter Christi, delivered with the rhetorical poise and spiritual content characteristic of Knox's preaching.