The Immaculate Conception
From the first moment of her life Mary was preserved from original sin by the grace of her Son, so she was saved by Christ in the most perfect way.

What this lesson teaches
- The Immaculate Conception means Mary was conceived without original sin; it is not the virgin birth of Jesus.
- Pope Pius IX defined it as dogma on December 8, 1854.
- Mary was redeemed by Christ, preserved from sin rather than cleansed afterward.
- By God's grace Mary also never committed personal sin.
Catechism paragraphs this lesson cites
- CCC 490-493
CCC means the Catechism of the Catholic Church. Saints Light teaches it in its own words and never quotes it. Look up any paragraph in a printed copy or at vatican.va. See every lesson by paragraph in the Catechism index.
Scripture read in this lesson: Luke 1:28; Genesis 3:15; Luke 1:47.
A sample question from this lesson
What does the Immaculate Conception refer to?
- Jesus being conceived without a human father
- Mary being conceived without original sin
- Mary being taken body and soul into heaven
- Jesus being born without sin
Show the answer
Mary being conceived without original sin. The lesson stresses that the dogma concerns Mary's own conception, not the virginal conception of Jesus (CCC 491).
The lesson in the app has three questions, each with an explanation.
Words to know
- Original sin
- The fallen state, lacking original holiness, that every human inherits from Adam.
- Preservative redemption
- Scotus's explanation that Mary was redeemed by being kept from sin rather than freed from it afterward.
More terms in the Catholic glossary. More passages in the Scripture index.
Read the full lesson in the app
"The Immaculate Conception" is lesson 4 of Mary and the Saints. In Saints Light you get the whole teaching, the Scripture quoted in full, all three questions and a step to live it this week.
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Related lessons
- Mary and the Saints: The Family of God (Start Here, free)