 Errico - during his studies - visited the sick twice per week and also would encourage children to attend catechism classes for instruction in the faith.He received his ordination to the priesthood in the Naples Cathedral in the Santa Restituta chapel on 23 September 1815 from Cardinal Luigi Ruffo Scilla.He became a teacher after his ordination and worked as such until 1835 while he also served as a parish priest for the Santi Cosma e Damiano parish church.