Provinz Imbabura
Holguín promoted the process of beatification and canonization of Narcisa de Nobol. In 1980 he founded the seminary of Ibarra, which has created more than 120 priests. He fostered the creation of a tenement for more than 5,000 families of the Imbabura Province. As Military Bishop, he structured the religious service of the Military of Ecuador. His pastoral work was exhaustive, preaching numerous spiritual retirements, visiting the parishes of his dioceses and overseeing the work of the dioceses' seminaries.