CathInfo.com

Faith, hope and charity, together with all the other qualities that enable us to live the supernatural life, come to us from Our Lord. He is actually the Head of His Mystical Body, and invites those who do not as yet belong to it to join it so that they may be established and strengthened in these virtues by Our Lord, the Head of the Church. There is no other source from which these benefits can come. Fenton

Furthermore, faith, hope, charity, and the rest actually constitute what the older theologians used to call the spiritual or inner bond of unity within the Catholic Church. If a man actually believes in God by holding as certain, on the authority of God revealing, the content of that message Our Lord preached and continues to preach in the midst of the society of His disciples, and if, in the light of that faith, and moved by God's grace, a man hopes for God as his own eternal Good and loves Him with the supernatural friendship of charity, he is by that very fact joined to Our Lord and to His disciples within the supernatural kingdom of God. Fenton