In this short prayer, similar in form to the Angelus, we invoke the Blessed Virgin Mary for her help in safeguarding our virtue. The first verses recall Mary's own chastity (through the doctrine of her perpetual virginity), setting her up as our example. Then the prayer turns to our request: that Mary may obtain for us the grace to avoid mortal sin. This is a very good prayer to pray at times when we are feeling tempted and afraid of falling into sin.
Invocations to the Blessed Virgin Mary
Thou who wast a virgin before thy delivery, pray for us.
Hail Mary, etc.Thou who wast a virgin in thy delivery, pray for us.
Hail Mary, etc.Thou who wast a virgin after thy delivery, pray for us.
Hail Mary, etc.My Mother, deliver me from mortal sin.
Hail Mary, etc. (three times).Mother of love, of sorrow and of mercy, pray for us.
Remember, O Virgin Mother of God, when thou shalt stand before the face of the Lord, that thou speak favorable things in our behalf and that He may turn away His indignation from us.
Thou art my Mother, O Virgin Mary: keep me safe lest I ever offend thy dear Son, and obtain for me the grace to please Him always and in all things. Amen.

