This is a bilingual English/Spanish song from Rory Cooney. Or rather he wrote the words and music for the refrain, based on John 21:15, and the verses are Psalm 23 from the The Grail with music by Joseph Gelineau.
Cooney gives SATB parts for the refrain if you need them (T&B in unison) and it appears the cantors can be in two parts for the verses.
The sheet music is at GIA and the text here. The music says no guitar in the verses so… no guitar in the verses.