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It is not a technical commentary in that it is not dependent upon the Greek text but the author makes regular references to Greek in his exegesis and exposition. You do not need to know Greek to benefit from this commentary. I cannot remark much on his sections on 1 and 2 Timothy as I have not spent as much in them as I have the Titus section.
As is typical of more thorough commentaries the author addresses authorship and days, context, and literary analysis. The exegesis and exposition is both fair and in depth. He is complementarian but not in an overbearing way. A feature of this commentary series is its emphasis on Biblical Theology, which I found extremely helpful. The commentary has a chapter on Biblical and Theological themes which was a substantial 185 pages! This has a goldmine of information for the student. I found multiple topics covered in the PE discussed and developed theologically that gave more breadth and depth to my understanding of the text as well as informed my preaching. I enthusiastically recommend this commentary and look forward to forthcoming commentaries in the series.