Holy Week begins with PALM SUNDAY. The Church invites the faithful to accompany Christ who rides humbly on a donkey into the Holy City, Jerusalem. People hold palm branches in their hand, echoing the song of the Children of Jerusalem who welcomed Jesus with these words, “Hosanna to the Son of David! Hosanna in the Highest!” The priest’s red vestments are striking as they reflect the story of the Passion of Jesus which is read at the Gospel.
“The summit of the Liturgical Year is the Easter Triduum—which extends from the evening of HOLY THURSDAY to the evening of EASTER SUNDAY. Though chronologically three days, they are liturgically one day unfolding for us the unity of Christ’s Paschal Mystery.” (USCCB website) The Paschal Mystery (sometimes referred to as the Passover or Easter Mystery) are the main saving acts of Jesus Christ including His Passion, Death, Resurrection and Ascension.