Thirtieth day of Lent

Doctor Cyril's nineteenth catechetical lecture

St. Cyril of Jerusalem wrote (or spoke and later his words were committed to paper) twenty-three known lectures intended for new converts.  Along with a prologue, they can be found here.  The first eighteen are  intended for the season of Lent for catachumens; the final five are meant to be read to the newly baptized during the octave of Easter.