Catholic Culture - Memorial of the Immaculate Heart of Mary: O God, who prepared a fit dwelling place for the Holy Spirit in the Heart of the Blessed Virgin Mary, graciously grant that through her intercession we may be a worthy temple of your glory. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, God, for ever and ever... In the midst of the second world war Pope Pius XII put the whole world under the special protection of our Savior's Mother by consecrating it to her Immaculate Heart, and in 1944 he decreed that in the future the whole Church should celebrate the Memorial of the Immaculate Heart of Mary