This sounds to me like a grand Communion procession from Paul Mason. You can find the the sheet music in the collection Hymns and Spiritual Songs Vol 1 at Liturgical Song.
That said, he describes it as easy to sing while walking, and that it should be played as a reflective chant. I suspect we are only singing the refrain while walking with a cantor handling the verses.
He has harvested Eucharistic sayings and statements from the Gospels and 1 Corinthians for the verses. If your procession isn’t this long, obviously just pick the best verses for the selected liturgy.
It would be great to hear full recordings of more of these songs. I fear some musicians think we can all just sit down and sight read these pieces like they can. This is another with a full score including for strings and clarinet.
I broke out the fake BIAB organ and used more of his accompaniment notes than usual in my backing:
Refrain
When we eat this bread and drink this cup
We proclaim your death, Lord Jesus.
1 “When two or three are gathered together in my name
There am I in the midst of them.”
2 “I am with you now and always until the end of time.
If you thirst come to me and drink.”
3 ” Come and eat my bread and never be hungry. Drink my cup.
Trust in me you will never thirst.”
4 “You who eat my flesh and drink my blood have eternal life.
You live in me, and I live in you.”
5 “I am the vine and you are the branches; you live in me,
And I in you, bearing bountious fruit.”
6 Jesus spoke to Thomas: “Put your hand here and feel my wounds.
Doubt no longer, just believe.”
7 Christ became our paschal sacrifice; the worthy lamb.
Let us feast on the bread of life.
8 The disciples recognised the Lord in the breaking bread.
Now he is risen. Aleleluia!
© 1995, 2019 Paul Mason Published by Liturgical Song www.liturgicalsong.com