For the Catholic, Sacred Tradition combined with the Holy Scriptures forms his Rule of Faith, for he answers with St. Irenæus (ca. AD 140-202), the Bishop of Lyon and a Father of the Church. St. Irenæus wrote: “We must not seek the truth from others, when we can easily acquire it from the Church. The Apostles in the fullness of their riches brought into it, as into a depository, all that belongs to the truth. He who wishes may take from it the cup of life. This is the entrance into life: all others are thieves and burglars. For this reason, we must avoid them, love diligently what belongs to the Church, and learn the Tradition of truth” (Against Heresies).
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