"O God, by foreseen merits of the death of Christ, You shielded Mary from all stain of sin and preserved the Virgin Mother immaculate at her conception so that she might be a fitting dwelling place for Your Son. Cleanse us from sin through her intercession so that we also may come to You untainted by sin."
- Collect for the Immaculate Conception -
"Our soul overflows with joy and our tongue with exultation. We give, and we shall continue to give, the humblest and deepest thanks to Jesus Christ, our Lord, because through his singular grace He has granted to us, unworthy though we be, to decree and offer this honor and glory and praise to his most holy Mother.
"We have, therefore, a very certain hope and complete confidence that the most Blessed Virgin will ensure by her most powerful patronage that all difficulties be removed and all errors dissipated, so that our Holy Mother the Catholic Church may flourish daily more and more throughout all the nations and countries, and may reign 'from sea to sea and from the river to the ends of the earth,' and may enjoy genuine peace, tranquility and liberty.
"We are firm in our confidence that she will obtain pardon for the sinner, health for the sick, strength of heart for the weak, consolation for the afflicted, help for those in danger; that she will remove spiritual blindness from all who are in error, so that they may return to the path of truth and justice, and that here may be one flock and one shepherd."
- Proclamation of the Dogma of the Immaculate Conception by Pope Pius IX
O Mary, conceived without sin,