Lord Jesus, I know that every perfect gift, and especially that of chastity, depends on the power of Your providence. Without You a mere creature can do nothing. Therefore, I beg You to defend by Your grace the chastity and purity of my body and soul. And if I have ever sensed or imagined anything that could stain my chastity and purity, blot it out, Supreme Lord of my powers, that I may advance with a pure heart in Your love and service, offering myself on the most pure altar of Your divinity all the days of my life. Amen.