The Maronite Church, due to its long and deep Latinization, has largely adopted the Western Augustinian framework for original sin: humanity inherits from Adam not only the consequences of his sin (mortality, suffering, disordered desires) but also the state of being deprived of sanctifying grace and subject to guilt—a condition remedied by baptism. This is more aligned with the Latin Catholic formulation than with the Eastern concept of 'ancestral sin,' which emphasizes inherited mortality without inherited guilt.

The doctrine of the Immaculate Conception—Mary's preservation from original sin from the moment of her conception—is fully accepted by the Maronite Church, having been defined by the Pope in 1854. Baptism is taught as the sacrament that removes original sin and restores the grace of divine life to the recipient. The Council of Trent's decrees on original sin are binding on all Catholics, including Maronites, and the Maronite Church adheres to them.