The second Mass, which used formerly to be said on Maundy Thursday, was that of the blessing of the Holy Oils. This holy function, which takes place but once a year, requires a bishop as the consecrator. For now many centuries, this great ceremony is celebrated at the single Mass, which is said, on this day, in commemoration of Our Lord’s Supper, on Maundy Thursday morning. It is called the “Chrism Mass.”
