The full English translation of St. Basil the Great's Commentary on the Prophet Isaiah by Nikolai A. Lipatov (published by Edition Cicero in 2001, 441 pages) is a scholarly translation that can be accessed through Academia.edu (see here). The translator has also argued on the genuine authenticity of the authorship of St. Basil for this commentary (see here), which was doubted in the West for centuries.
“…As for the Scriptural passages about which you enquire, we were much surprised that an explanation was requested from us, the unlearned, and about such expressions which properly should be elucidated only by men inspired by God. Such interpretations have already been produced by them, and above all - the detailed interpretation by the Great and divine Basil. So, when you take the book of his commentary on Isaiah, you will learn the things about which you enquire. Otherwise their consideration, which requires a whole treatise, would go beyond the limits of a letter."
“…As for the Scriptural passages about which you enquire, we were much surprised that an explanation was requested from us, the unlearned, and about such expressions which properly should be elucidated only by men inspired by God. Such interpretations have already been produced by them, and above all - the detailed interpretation by the Great and divine Basil. So, when you take the book of his commentary on Isaiah, you will learn the things about which you enquire. Otherwise their consideration, which requires a whole treatise, would go beyond the limits of a letter."
St. Theodore of Studion, from the Letter to Hegoumenos Auxentios
"… So, if both explanations of this allegory satisfy you, you will not injure your soul in any way, but if you are at a loss which of the two to accept, without any doubt or hesitation prefer the interpretation of the Great Basil. For this wise man and a revealer of God is honoured highly indeed for all his interpretations of the divine Scriptures, but especially it is in his exegetical interpretation of Isaiah that he is superior to all others and has secured for himself the first place. Because of this I also have learnt to introduce into my exposition many allegories. What need do you have of other stars when the Sun, the brightest of them all, makes this narration clear and throws light upon it? For either no one can surpass Basil, or if anyone at all, than it would be only his friend Gregory.”
Michael Psellos, from the Explanation of a Prophetic Utterance from the Book of Isaiah
