Chapter 37 — Part IV: Prayer — The Third Petition: Thy Will Be Done on Earth as It Is in Heaven
Section 11. Man's Passions Rebel Against God's Will — The same should also be the fervent prayer of those in whose souls God-already reigns; who have been already illumined with the divine light, which enables them to obey the will of God. Although thus prepared, they have still to struggle against their own passions on account of the tendency to evil implanted in man's sensual appetite. Hence even though we are of the number of the just, we are still exposed to great danger from our own frailty, and should always fear lest, drawn aside and allured by our concupiscences, which war in our members, we should again stray from the path of salvation. Of this danger Christ the Lord admonishes us in these words: Watch ye and pray that ye enter not into temptation; the spirit indeed is willing but the flesh is weak.