The apostles were the first after the Lord himself to provide us with an example of this generous poverty, when they all equally left their belongings at the call of the heavenly master. By an immediate conversion they were turned from the catching of fish to become fishers of men, and by their own example they won many others to the imitation of their own faith. In these first sons of the Church there was but one heart and one soul among all who believed. Abandoning all their worldly property and possessions in their dedicated poverty, they were enriched with eternal goods, and in accordance with the apostolic preaching, they rejoiced to have nothing of this world and to possess all things with Christ.
From a sermon on the beatitudes by Saint Leo the Great, pope