Saint Irenaeus, Doctor of the Church[& Martyr]

From Against Heresies

If our flesh is not saved, then the Lord has not redeemed us with his blood, the eucharistic chalice does not make us sharers in his blood, and the bread we break does not make us sharers in his body. There can be no blood without veins, flesh and the rest of the human substance, and this the Word of God actually became: it was with his own blood that he redeemed us. As the Apostle says: In him, through his blood, we have been redeemed, our sins have been forgiven.
We are his members and we are nourished by creatures, which is his gift to us, for it is he who causes the sun to rise and the rain to fall. He declared that the chalice, which comes from his creation, was his blood, and he makes it the nourishment of our blood. He affirmed that the bread, which comes from his creation, was his body, and he makes it the nourishment of our body. When the chalice we mix and the bread we bake receive the word of God, the eucharistic elements become the body and blood of Christ, by which our bodies live and grow. How then can it be said that flesh belonging to the Lord’s own body and nourished by his body and blood is incapable of receiving God’s gift of eternal life? Saint Paul says in his letter to the Ephesians that we are members of his body, of his flesh and bones. He is not speaking of some spiritual and incorporeal kind of man, for spirits do not have flesh and bones. He is speaking of a real human body composed of flesh, sinews and bones, nourished by the chalice of Christ’s blood and receiving growth from the bread which is his body.
The slip of a vine planted in the ground bears fruit at the proper time. The grain of wheat falls into the ground and decays only to be raised up again and multiplied by the Spirit of God who sustains all things. The Wisdom of God places these things at the service of man and when they receive God’s word they become the eucharist, which is the body and blood of Christ. In the same way our bodies, which have been nourished by the eucharist, will be buried in the earth and will decay, but they will rise again at the appointed time, for the Word of God will raise them up to the glory of God the Father. Then the Father will clothe our mortal nature in immortality and freely endow our corruptible nature with incorruptibility, for God’s power is shown most perfectly in weakness.

Written ca. 185 AD

Reading	From the treatise Against Heresies by Saint Irenaeus, bishop
Knowledge of the Father consists in the self-revelation of the Son
No one can know the Father apart from God’s Word, that is, unless the Son reveals him, and no one can know the Son unless the Father so wills. Now the Son fulfils the Father’s good pleasure: the Father sends, the Son is sent, and he comes. The Father is beyond our sight and comprehension; but he is known by his Word, who tells us of him who surpasses all telling. In turn, the Father alone has knowledge of his Word. And the Lord has revealed both truths. Therefore, the Son reveals the knowledge of the Father by his revelation of himself. Knowledge of the Father consists in the self-revelation of the Son, for all is revealed through the Word. The Father’s purpose in revealing the Son was to make himself known to us all and so to welcome into eternal rest those who believe in him, establishing them in justice, preserving them from death. To believe in him means to do his will. Through creation itself the Word reveals God the Creator. Through the world he reveals the Lord who made the world. Through all that is fashioned he reveals the craftsman who fashioned it all. Through the Son the Word reveals the Father who begot him as Son. All speak of these things in the same language, but they do not believe them in the same way. Through the law and the prophets the Word revealed himself and his Father in the same way, and though all the people equally heard the message not all equally believed it. Through the Word, made visible and palpable, the Father was revealed, though not all equally believed in him. But all saw the Father in the Son, for the Father of the Son cannot be seen, but the Son of the Father can be seen. The Son performs everything as a ministry to the Father, from beginning to end, and without the Son no one can know God. The way to know the Father is the Son. Knowledge of the Son is in the Father, and is revealed through the Son. For this reason the Lord said: No one knows the Son except the Father; and no one knows the Father except the Son, and those to whom the Son has revealed him. The word “revealed” refers not only to the future – as though the Word began to reveal the Father only when he was born of Mary; it refers equally to all time. From the beginning the Son is present to creation, reveals the Father to all, to those the Father chooses, when the Father chooses, and as the Father chooses. So, there is in all and through all one God the Father, one Word and Son, and one Spirit, and one salvation for all who believe in him.

Reading

From the treatise Against Heresies by Saint Irenaeus, bishop

Knowledge of the Father consists in the self-revelation of the Son

No one can know the Father apart from God’s Word, that is, unless the Son reveals him, and no one can know the Son unless the Father so wills. Now the Son fulfils the Father’s good pleasure: the Father sends, the Son is sent, and he comes. The Father is beyond our sight and comprehension; but he is known by his Word, who tells us of him who surpasses all telling. In turn, the Father alone has knowledge of his Word. And the Lord has revealed both truths. Therefore, the Son reveals the knowledge of the Father by his revelation of himself. Knowledge of the Father consists in the self-revelation of the Son, for all is revealed through the Word.
The Father’s purpose in revealing the Son was to make himself known to us all and so to welcome into eternal rest those who believe in him, establishing them in justice, preserving them from death. To believe in him means to do his will.
Through creation itself the Word reveals God the Creator. Through the world he reveals the Lord who made the world. Through all that is fashioned he reveals the craftsman who fashioned it all. Through the Son the Word reveals the Father who begot him as Son. All speak of these things in the same language, but they do not believe them in the same way. Through the law and the prophets the Word revealed himself and his Father in the same way, and though all the people equally heard the message not all equally believed it. Through the Word, made visible and palpable, the Father was revealed, though not all equally believed in him. But all saw the Father in the Son, for the Father of the Son cannot be seen, but the Son of the Father can be seen. The Son performs everything as a ministry to the Father, from beginning to end, and without the Son no one can know God. The way to know the Father is the Son. Knowledge of the Son is in the Father, and is revealed through the Son. For this reason the Lord said: No one knows the Son except the Father; and no one knows the Father except the Son, and those to whom the Son has revealed him. The word “revealed” refers not only to the future – as though the Word began to reveal the Father only when he was born of Mary; it refers equally to all time. From the beginning the Son is present to creation, reveals the Father to all, to those the Father chooses, when the Father chooses, and as the Father chooses. So, there is in all and through all one God the Father, one Word and Son, and one Spirit, and one salvation for all who believe in him.

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