The Archdiocese of Denver commemorated Holy Thursday, the day when Jesus instituted the Eucharist and washed the feet of his disciples.

To mark the celebration, the archdiocese recounted the story on a Thursday Facebook post. 

"Do you realize what I have done for you?" the post said, quoting John 13: 12-14. "You call me 'teacher' and 'master,' and rightly so, for indeed I am. If I, therefore, the master and teacher, have washed your feet, you ought to wash one another's feet. I have given you a model to follow, so that as I have done for you, you should also do." 

The archdiocese then offered a reflection.

"Jesus' humility to stoop down and wash the feet of his disciples is mirrored in his humility to take the form of bread and wine to nourish us," the post said. "On this Holy Thursday, join us in giving thanks for the great gift of the Eucharist."

The Easter Triduum begins on the evening of Holy Thursday and runs through Good Friday and Holy Saturday, concluding on the evening of Easter Sunday; a report on the U.S. Conference of Catholic Bishops (USCCB) website said. From a liturgical standpoint, these three days are considered a single day. 

Mass on the evening of Holy Thursday memorializes the Last Supper and starts the Easter Triduum, the USCCB report said. Jesus introduced the Sacrament of the Eucharist during the Last Supper, at which he offered his body and blood to his disciples in the form of bread and wine. 

Jesus also established the priesthood, entrusting the Church's legacy to his apostles. At Holy Thursday Mass, the celebrant washes the feet of several participants, imitating the humility of Jesus in washing his disciples' feet. 

Easter celebrates Jesus' Resurrection from death, three days after he was crucified; a report on Christianity.com said. The Resurrection not only confirmed that Jesus was the true Son of God, it also granted eternal life in Heaven to those who believe in him. The Resurrection of Jesus is the cornerstone of the Christian faith. Without the Resurrection, there could be no Christianity.