This song is in Spanish, is arranged for choirs, and is part of an "Oscar Romero Cantata" written by Tracy Howe Wispelwey. The Cantata is based on the homilies of Arch Bishop Romero who was assassinated in El Salvador in 1980 for speaking out against human rights violations and particularly defending the most vulnerable among the poorest of the poor. According to the composer, "this is a song repenting of materialism and recognizing God's will and blessing on all God's people."
This could be a powerful choral anthem, and an entire service could easily be built around the themes in the lyrics. See the translation to understand the lyrics in English.