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What does the Immaculate Conception teach about Mary’s conception?

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Antonello da Messina: Madonna and Child — Mary *Madonna and Child*, oil and tempera on panel by Antonello da Messina, 1475; in the National Gallery of Art, Washington D.C.

The Immaculate Conception is a Roman Catholic dogma that teaches Mary, the mother of Jesus, was preserved free from the effects of original sin from the very first instant of her conception.12

It is a common misconception to confuse this doctrine with the Virgin Birth; however, the Immaculate Conception specifically refers to the state of Mary’s own soul at the moment of her conception by her parents, rather than the conception of Jesus.12

Proclaimed as dogma by Pope Pius IX in 1854, the teaching holds that Mary was granted this unique privilege through God’s grace to prepare her for her role as the mother of God. Rather than being a result of her own merit, this grace was applied to prevent the stain of sin from reaching her, representing a more perfect form of redemption.32