PM: Introit Mondays--Palm (Passion) Sunday

The Introit is to support the action of procession toward and into the church. There is quite the entrance this day.

Hosanna to the Son of David, the King of Israel. Blessed is he who comes in the name of the Lord. Hosanna in the highest.

Before the palm branches are blessed, the echoes of the "Holy, holy, holy..." we recite before the Eucharistic Prayer. As Jesus enter Jerusalem acknowledged as King, so should we, not only here but also in our lives.

The children of Jerusalem welcomed Christ the King. They carried olive branches and loudly praised the Lord: "Hosanna in the highest."

And/Or 

The children of Jerusalem welcomed Christ the King. They spread their cloaks before him and loudly praised the Lord: "Hosanna to the Son of David! Blessed is he who comes in the name of the Lord!"

 Cf. Matt. 21:9

These are sung as the procession makes it way to the church. The People of God, whether of Old or New Testament, must continually prepare the way for the Lord in their lives. (Here the hymn "All Glory, Laud, and Honor" is also used to assist in the liturgical action.)

As the Lord entered the Holy City, the children of the Hebrews proclaimed the resurrection of life, * and, waving olive branches, they loudly praised the Lord: "Hosanna in the highest." 

V. When the people heard that Jesus was entering Jerusalem, they went to meet him * and, waving...

This is sung upon entrance into the church. We still sing His praises; yet, how quickly the mood will change upon the proclamation of the First Reading.