Solemnity of the Immaculate Conception
The Lord hath made His work known... I will extol You, O Lord, for You lifted me up, and did not let my enemies rejoice over me (Ps. 97.2; 29.2 - 9th Antiphon and Response of the 3rd Nocturn in the Office of Matins).
In the Most Blessed Virgin Mary, nowhere could Satan's proud 'liberal' head take root: Dirigite viam Domini ("Make straight the way of the Lord").
A most blessed Feast to everyone!