You need to study development of the canon, not impose your own meaning on what iraneus says. It is called " confirmation bias"- a typical Protestant trait,
We have iraneus to thank for confirming the four gospels but the rest was still fluid.
For example.. He speaks about Hermas. So is that scripture in your book?
Few even has a substantial set of scripts.
So it was not how faith was passed on.
Sola scriptura is neither what Jesus preached nor the early church did. Protestants forced that manmade tradition on us a millennium later. Causing explosion in the variety of meanings of doctrine.
You dodge the issue of the role of the church in defining doctrine
First let me thank you for being a believing Catholic. I enjoy these exchanges because I know that I am dealing with a believer and we are hammering out the finer points of doctrine. And let me be the first to invite you to stand for the historic catholic (not Roman, sadly) faith.
I have gone through great pains to show the context of Irenaeus to safeguard myself from confirmation bias. If I have misrepresented Irenaeus in any way please point it out. The Early Church Fathers (ECF) are not confessional Lutherans, nor are they modern Roman Catholics. My advice is to read the ECF and let them be the ECF. Some are operating without a complete NT nor have an idea what the the NT canon is (complete that is). And for the record I do appreciate everything the church in Rome has done for the catholic faith especially in the area of the canon.
That said, The development of the canon is something that is near and dear to me. I have several volumes on the process of the recognition of canon. So let's get down to it shall we?
It seems to me you have done little research in the area of ECF or the development of the canon. Irenaeus does a lot more than confirming the four Gospels, by my estimation he confirms the vast majority of the NT. If you are need of more quotes allow me some time and I can provide them for you.
The Shepard is an interesting book. Every Christian should be familiar with this book but if you have read the book the first thing you will recognize is the adoptionism that is evident in the book which as orthodox christians we reject. While not exactly orthodox it can still teach us about what early christians thought even if not exactly orthodox. I would also recommend 1st Clement and the Didache as mandatory reading. The ECF are not always reliable. And to say they speak with one voice is frankly silly. For example Irenaeus , who stated that the LORD according to tradition was almost 50 years old:
6. But, besides this, those very Jews who then disputed with the Lord Jesus Christ have most clearly indicated the same thing. For when the Lord said to them, “Your father Abraham rejoiced to see My day; and he saw it, and was glad,” they answered Him, “Thou art not yet fifty years old, and hast Thou seen Abraham?” Now, such language is fittingly applied to one who has already passed the age of forty, without having as yet reached his fiftieth year, yet is not far from this latter period. But to one who is only thirty years old it would unquestionably be said, “Thou art not yet forty years old.” For those who wished to convict Him of falsehood would certainly not extend the number of His years far beyond the age which they saw He had attained; but they mentioned a period near His real age, whether they had truly ascertained this out of the entry in the public register, or simply made a conjecture from what they observed that He was above forty years old, and that He certainly was not one of only thirty years of age. For it is altogether unreasonable to suppose that they were mistaken by twenty years, when they wished to prove Him younger than the times of Abraham. For what they saw, that they also expressed; and He whom they beheld was not a mere phantasm, but an actual being5 of flesh and blood. He did not then want much of being fifty years old; and, in accordance with that fact, they said to Him, “Thou art not yet fifty years old, and hast Thou seen Abraham?” He did not therefore preach only for one year, nor did He suffer in the twelfth month of the year. For the period included between the thirtieth and the fiftieth year can never be regarded as one year, unless indeed, among their Æons, there be so long years assigned to those who sit in their ranks with Bythus in the Pleroma; of which beings Homer the poet, too, has spoken, doubtless being inspired by the Mother of their [system of] error:—
Οἱ δὲ θεοὶ πὰρ Ζηνὶ καθήμενοι ἠγορόωντο
Χρυσέψ ἐν δαπέδψ:
which we may thus render into English:—
“The gods sat round, while Jove presided o’er,
And converse held upon the golden floor.”
Irenaeus of Lyons. (1885). Irenæus against Heresies. In A. Roberts, J. Donaldson, & A. C. Coxe (Eds.), The Apostolic Fathers with Justin Martyr and Irenaeus (Vol. 1, p. 392). Buffalo, NY: Christian Literature Company.
So you see why I pushed you on what is Tradition. Because according to tradition Irenaeus states the Lord was Almost 50 years old at the crucifiction and that is something no one believes is true.
Few even has a substantial set of scripts.
So it was not how faith was passed on.
Can you revise? I don't know know what you mean by these fragmants.
Actually, the Lord had plenty to say about tradition.
Traditions and Commandments
7 Now when the Pharisees gathered to him, with some of the scribes who had come from Jerusalem, 2 they saw that some of his disciples ate with hands that were defiled, that is, unwashed. 3 (For the Pharisees and all the Jews do not eat unless they wash their hands properly, holding to the tradition of the elders, 4 and when they come from the marketplace, they do not eat unless they wash. And there are many other traditions that they observe, such as the washing of cups and pots and copper vessels and dining couches.) 5 And the Pharisees and the scribes asked him, “Why do your disciples not walk according to the tradition of the elders, but eat with defiled hands?” 6 And he said to them, “Well did Isaiah prophesy of you hypocrites, as it is written,
“ ‘This people honors me with their lips,
but their heart is far from me;
7 in vain do they worship me,
teaching as doctrines the commandments of men.’
8 You leave the commandment of God and hold to the tradition of men.”
9 And he said to them, “You have a fine way of rejecting the commandment of God in order to establish your tradition! 10 For Moses said, ‘Honor your father and your mother’; and, ‘Whoever reviles father or mother must surely die.’ 11 But you say, ‘If a man tells his father or his mother, “Whatever you would have gained from me is Corban” ’ (that is, given to God)— 12 then you no longer permit him to do anything for his father or mother, 13 thus making void the word of God by your tradition that you have handed down. And many such things you do.”
The Holy Bible: English Standard Version. (2016). (Mk 7:1–13). Wheaton: Standard Bible Society.
Seems to me the Lord reacts rather strongly to "Tradition".