Bryan Cross answered on the subject of the ability of the Scripture to interpret Scripture sufficiently, from Scripture, reason, and tradition.
Caesarius of Arles (about A.D. 470-543) commenting on Rev. 22:10:
Just as the divine Scriptures are sealed for those who are proud and who love the world more than God, so are they opened for those who are humble and who fear God.- Caesarius of Arles as found in William C. Weinrich, ed., Ancient Christian Commentary on Scripture: New Testament, Vol. XII, Revelation (Downers Grove: InterVarsity Press, 2005), p. 398. Cf. Commentary on the Apocalypse 22.10, Homily 19 (repeated twice in the homily).
The fundamental problems with Bryan's analysis seem to be his failure to recognize the divine nature and purpose of Scripture. The purpose of Scripture is to put in writing those things that God wants us to know.
Augustine (about A.D. 354-430) commenting on Psalm 110:
God established an era of promises and another era for the fulfillment of his promises. The time for promises was the age of the prophets down to that of John the Baptist. From his day, and thenceforth until the end, is the era of fulfillment. God is faithful and has put himself in our debt not because we have given him anything but because he has promised us so much. Yet even promising was not enough for him. He wanted to be bound in writing as well, so he gave us a signed copy of his promises, as it were, so that once he had begun to fulfill them we could study the scriptures and learn the sequence of their realization.- Augustine, John E. Rotelle, O.S.A., ed., The Works of Saint Augustine, Part 3, Vol. 19, trans. Maria Boulding, O.S.B., Expositions of the Psalms, Psalms 99-120, Exposition 23 of Psalm 109.1 (Hyde Park: New City Press, 2003), p. 261.
Hilary of Poitiers (about A.D. 315-67):
Salvation is far from the wicked, because they have not sought the statutes of God; since for no other purpose were they consigned to writing, than that they should come within the knowledge and conceptions of all without exception.Latin text:
Ob id enim longe a peccatoribus salus est, quia non exquisierunt justificationes Dei: cum non utique ob aliud consignatae litteris maneant, quam ut ad universorum scientiam notionemque defluerent.Citation: Hilary of Poitiers, Psalmi CXVIII, Littera XX, 5, PL 9:633; translation in William Goode, The Divine Rule of Faith and Practice, 2nd edition, 3 Volumes (London: John Henry Jackson, publisher, 1853), Vol. 3, p. 246.
Athanasius (about A.D. 297-373):
Since, therefore, such an attempt is futile madness, nay, more than madness!, let no one ask such questions any more, or else let him learn only that which is in the Scriptures. For the illustrations they contain which bear upon this subject are sufficient and suitable.- Athanasius, C. R. B. Shapland, trans., The Letters of Athanasius Concerning the Holy Spirit, Ad Serapion 1.19 (New York: The Philosophical Library, 1951), p. 108.
Thus, Scripture is written with the purpose that we understand and benefit.
Ambrosiaster (flourished about A.D. 366-384):
The fact is that Scripture speaks in our own manner so that we may understand.Latin text:
Sed Scriptura more nostro loquitur, ut intelligere possumus.Citation: Ambrosiaster, In Epistolam Beati Pauli Galatas, v. 4:7, PL 17:360; translation in Mark J. Edwards, Ancient Christian Commentary on Scripture, New Testament VIII: Galatians, Ephesians, Philippians (Downers Grove: InterVarsity Press, 1999), p. 57.
Jerome (about A.D. 347-420):
Scripture speaks in terms of our human frailty that we may the more easily understand.- Jerome, FC, Vol. 57, The Homilies of St. Jerome: Vol. 2, Homily 65 (Washington D.C.: The Catholic University of America Press, 1966), p. 57.
Chrysostom (about A.D. 349-407):
Anyhow, in case by wanting to make a display of these people’s stupidity we, too, find ourselves induced to utter unseemly remarks, let’s have done with their folly and turn aside from such idiocy; let us follow the direction of Sacred Scripture in the interpretation it gives of itself, provided we don’t get completely absorbed with the concreteness of the words, but realize that our limitations are the reason for the concreteness of the language. Human senses, you see, would never be able to grasp what is said if they had not the benefit of such great considerateness.- Chrysostom, FC, Vol. 74, Homilies on Genesis 1-17, Homily 13.8 (Washington, D.C.: The Catholic University of America Press, 1986), p. 172.
Thus, Scripture can be compared to a pharmacy, and lack of knowledge of Scripture can be viewed as a general source of all evil.
Basil of Caesarea (about A.D. 329-379):
All Scripture is inspired by God and is useful, composed by the Spirit for this reason, namely, that we men, each and all of us, as if in a general hospital for souls, may select the remedy for his own condition.- Basil of Caesarea, FC, Vol. 46, Saint Basil: Exegetical Homilies, Homily 10 on Psalm 1 (Washington D.C.: The Catholic University of America, 1963), p. 151.
Chrysostom (about A.D. 349-407):
Tarry not, I entreat, for another to teach thee; thou hast the oracles of God. No man teacheth thee as they; for he indeed oft grudgeth much for vainglory’s sake and envy. Hearken, I entreat you, all ye that are careful for this life, and procure books that will be medicines for the soul. If ye will not any other, yet get you at least the New Testament, the Apostolic Epistles, the Acts, the Gospels, for your constant teachers. If grief befall thee, dive into them as into a chest of medicines; take thence comfort of thy trouble, be it loss, or death, or bereavement of relations; or rather dive not into them merely, but take them wholly to thee; keep them in thy mind.- Chrysostom, NPNF1: Vol. XIII, Homilies on the Epistle of St. Paul to the Colossians, Homily 9.
This is the cause of all evils, the not knowing the Scriptures. We go into battle without arms, and how ought we to come off safe? Well contented should we be if we can be safe with them, let alone without them.
Or even the "perfume of life":
Ambrose (about A.D. 339-97):
Divine Scripture confers salvation on us and is fragrant with the perfume of life, so that he who reads may acquire sweetness and not rush into danger to his own destruction. Read with simplicity, man; I would not encourage you, a misdirected interpreter, to dig up meanings for yourself. The language is simple: ‘God created heaven and earth.’ He created what was not, not what was. And the earth was invisible, because water flowed over it and covered it. Darkness was diffused over it, because there was not yet the light of day, or the rays of the sun which can reveal even what lies hid beneath the waters.- Ambrose, FC, Vol. 42, Saint Ambrose: The Six Days of Creation, Book 1, the second homily, §30 (New York: Fathers of the Church, 1961), p. 34.
Part of the problem is that Bryan presents his case as though he were unsatisfied with the Scriptures as they were given. It is as though the thinks that Scripture could have been expressed better than it was.
Augustine (354-430) commenting on v. 6 of Psalm 147:
The psalm indicates to you what you must do if you have difficulty in understanding, for it goes on to say, The Lord welcomes the meek. Suppose you do not understand some passage, or understand only a little of it, or at any rate cannot master it: hold God’s scripture in honor, respect God’s word even when it is not clear to you, maintain a reverent attitude while you wait for understanding to come. Do not be over-bold and find fault with the obscurity of scripture or even allege that it is self-contradictory. There is no contradiction here. Some obscurity there may be, not in order that insight may be denied you, but so that your mind may be stretched until you can receive it. When some text seems dark to you, be sure that the physician has made it so; he is inviting you to knock. He wanted it to puzzle you so that you may be put through your paces as you keep on knocking; he wants it to be so, that he may open to you when you knock. As you persevere in knocking you will be stretched; as you are stretched, your capacity will be enlarged; as your capacity grows, you will receive what comes to you as gift. Do not be angry, then, when you find the door closed. Be gentle, be meek. Do not lash out against the obscure passage, saying, “That thought would have been better expressed if it had been put like this….” When will you ever be qualified to say it, or even judge how it ought to be said? It has been said in the right way. The patient has no business to alter his treatment; the doctor knows when to modify it. Trust him who is working on your cure.- Augustine, John E. Rotelle, O.S.A., ed., The Works of Saint Augustine, Part 3, Vol. 20, trans. Maria Boulding, O.S.B., Expositions of the Psalms, Psalms 121-150, Psalm 146.12 (Hyde Park: New City Press, 2004), p. 431.
Or that the Scriptures should answer questions that they do not.
Athanasius (about A.D. 297-373):
These things are sufficient to refute your foolish speech. Mock no more at the Godhead. For it is the part of those who mock to ask the questions which are not written and to say, So the Spirit is a son and the Father a grandfather?- Athanasius, C. R. B. Shapland, trans., The Letters of Athanasius Concerning the Holy Spirit, Ad Serapion 4.7 (New York: The Philosophical Library, 1951), p. 188.
Irenaeus (about A.D. 130 - 200):
(Scripture to be interpreted by Scripture) If, therefore, according to the rule which I have stated, we leave some questions in the hands of God, we shall both preserve our faith uninjured, and shall continue without danger; and all Scripture, which has been given to us by God, shall be found by us perfectly consistent; and the parables shall harmonize with those passages which are perfectly plain; and those statements the meaning of which is clear, shall serve to explain the parables; and through the many diversified utterances [of Scripture] there shall be heard one harmonious melody in us, praising in hymns that God who created all things. If, for instance, any one asks, “What was God doing before He made the world? ”we reply that the answer to such a question lies with God Himself. For that this world was formed perfect by God, receiving a beginning in time, the Scriptures teach us; but no Scripture reveals to us what God was employed about before this event. The answer therefore to that question remains with God, and it is not proper for us to aim at bringing forward foolish, rash, and blasphemous suppositions [in reply to it]; so, as by one’s imagining that he has discovered the origin of matter, he should in reality set aside God Himself who made all things.- Irenaeus, ANF: Vol. I, Against Heresies, 2:28:3 (note that the heading "Scripture to be Interpreted by Scripture" is, as far as I know, added by the editor)(Unlike Roman Catholic apologists, such as Bryan, Irenaeus tells us that God, not the Church, gave us the Scriptures, and that if a matter concerning God is not revealed in Scripture, it is because it is beyond the scope of extant revelation.)
Ambrose (about A.D. 339-97):
But subjects which are alien to our purpose and to divine testimony should be left to those ‘who are outside.’ We should adhere closely to the doctrine laid down by the celestial Scriptures.- Ambrose, FC, Vol. 42, Saint Ambrose: The Six Days of Creation, Book 2, the third homily, chapter 2, §7 (New York: Fathers of the Church, 1961), p. 51.
[to be cont'd in Section 5]