The Jesuit Brother is a man called by God to the apostolic and missionary work of the Church. He is a man who consecrates the labor of his hands, all his talents, all his life, to the service of God and his neighbor. He does this as a full member of a brotherhood of men with one and the same vision, the SOCIETY OF JESUS. As a Jesuit, he commits himself totally to God by taking the vows of poverty, chastity and obedience.
When Ignatius and his companions discerned how they were to live their vocation, their experience was already linked to the exercise of priestly ministry. But the required mobility to live out the vocation led Ignatius to accept into the Society a diversity of priests and brothers to share the same vocation and contribute to the one mission. All members are graced with the call to follow Jesus poor and humble.
The Brother’s vocation is to be sent to labor strenuously in giving aid towards the salvation and perfection of the souls of others. Brothers share in and contribute to the one apostolic vocation through the personal call of the Spirit. They can function in any mission proper to the Society. Brothers are intimately involved in every apostolic task of the Society through which this mission is carried out.
Thus, the first and most important contribution of a Brother is the gift of his own self, offered freely in service to the Lord.