Members of the Institute 'will endeavor to acquire an excellent professional training, remembering all the while that their union with God is the foundation and source of their apostolate.’ (Const., Art. 46) 'Throughout his/her professional life, the constant preoccupation of the member of the Voluntas Dei Institute is to be deeply permeated by the Gospels so as to be more and more a witness.’ (Art. 48).

In their trade or profession, the Voluntas should be the best to be found. The Church has no need of half-measures; she has no need for incompetent half-persons. If I want to act with the Lord, if I want to allow the Lord to reach my brothers and sisters through me, I must prepare for Him a worthy instrument.