In addition to the vows of chastity, poverty, and obedience, some Jesuits also take a fourth vow. The “professed fathers” in fact promise special obedience to the Pope circa missiones, making themselves available to be sent anywhere or in any case to receive any mission that the Pope considers useful for the good of the Church. The Society of Jesus is not the only Order to take a fourth vow. The Camillians, for example, take a vow of care for the sick, while monastic orders take a vow of stability. This “extra” vow has to do with the charism of the Order, that is, with the specific way of living the following of the Lord. For Jesuits, this means that the special obedience they live to the Holy Father is at the very heart of their identity.