Mary's free 'yes' to God - her fiat is the sign of her sinless nature, so free was she to see what great good God was working in her and through her, and to accept it without hesitation or demand. Sermon at the First Evensong of the Immaculate Conception. La Inmaculada Concepción , by Francisco Rizi , Museo del Prado (Wikimedia Commons) And Mary said, behold the handmaid of the Lord; be it unto me according to thy word. When the Blessed Virgin Mary began appearing to St Bern