In Majorca Spain he fell in with the holy lay-brother Alphonsus Rodriguez, who, having already learned by revelation the saintly career of Peter, became his spiritual guide, foretold to him the labors he would undergo in the Indies, and the throne he would gain in heaven. Ordained priest in New Granada, Peter was sent to Cartagena, the great slave-mart of the West Indies, and there he consecrated himself by vow to the salvation of slaves. For more than forty years he labored in this work.