Marian theology contributes to sustain the incarnation logic of divine action, which transforms human beings and history from within, granting new life and unsuspected future. Incarnation logic refers to the kenotic logic of God, through which He humanizes in Jesus Christ, descends, enters, submerges into our humanity, enslaves Himself, pierces humiliated humanity and establishes the dynamics of a new life. The text begins with a biblical study of the Annunciation pericope, through which is possible to affi rm that the grace of Mary is to serve to the humanization of God; then it presents how the early Church elaborated a Marian theology where the maternity of Mary is related to the Kenosis of the Word; following it analyzes some anthropological elements resultant of the incarnation logic of grace, starting from the anthropological meanings of the answer of Mary to the divine proposition; subsequently it indicates some consequences of the humanization of God to the Christian spirituality and concludes with a refl ection on the event of the encounter of the image of Our Lady of Aparecida, presented as a metaphor for the incarnation logic of the grace of God in the life of the poor. This event beckons a kenosis of the Church as presumption for a true discipleship.