Pope Francis offers the Chrism Mass in St. Peter's Basilica on April 1, 2021.

Vatican Media/CNA.
Pope Francis offers the Chrism Mass in St. Peter's Basilica on April 1, 2021.

The Chrism Mass of Holy Week is the Mass at which the pope, as the bishop of Rome, blesses the Oil of the Sick, the Oil of Catechumens, and the Chrism Oil, which will be used throughout the diocese over the coming year.