 He became a proponent for the poor and destitute and never stopped to render his assistance to those who needed it the most; this was something he undertook even in his childhood.Bishop Marello issued several pastoral letters that dealt with a range of issues such as catechism and organized one big pastoral visitation to visit all parishes in his diocese.Marello's cause for sainthood resulted in his beatification on 26 September 1993 in Asti and his canonization less than a decade later on 25 November 2001 in Saint Peter's Square.