This was a new song in 2007 for OCP’s Guitar Accompaniment Book. It is a communion song by Christopher Walker. There are also many extra verses for specific feasts.
The text is fine – you can find it in their preview.
The tune is interesting. It is described thusly:
A fluid harmonic sense with an ever-changing tonal center will appeal to more advanced choirs but the assembly refrain is mostly diatonic, keeping it accessible to all.
… or it is just maybe over fussy. He slides from a G# to an Ab at one point. I understand that they strictly speaking they aren’t the same note, but is the intent to actually pitch them differently. Those with some music theory may wish to school me on this matter.
If you are brave enough buy the sheet music at OCP.