Catechism of the Catholic Church

91 All the faithful share in understanding and handing on revealed truth. They have received the anointing of the Holy Spirit, who instructs them ⁵³ and guides them into all truth. ⁵⁴

92 "The whole body of the faithful. . . cannot err in matters of belief. This characteristic is shown in the supernatural appreciation of faith (sensus fidei) on the part of the whole people, when, from the bishops to the last of the faithful, they manifest a universal consent in matters of faith and morals." ⁵⁵

93 "By this appreciation of the faith, aroused and sustained by the Spirit of truth, the People of God, guided by the sacred teaching authority (Magisterium),. . . receives. . . the faith, once for all delivered to the saints. . . The People unfailingly adheres to this faith, penetrates it more deeply with right judgment, and applies it more fully in daily life." ⁵⁶