Holy Thursday Mass begins the great liturgy, the Sacred Triduum, which continues on Good Friday and concludes with the Easter Vigil. In today's liturgy we contemplate three mysteries: 1) The institution of the Eucharist; 2) The institution of the priesthood (both the ministerial priesthood and the common priesthood); and 3) The command of Our Lord to love one another.
We do all of this "in memory of Jesus." When we "remember" Jesus and his words and actions in the Mass, we celebrate his real, true, and substantial presence in Word and Sacrament.
