The following is taken directly from Dr. Terrance Espinoza's excellent Bible & Theology website, bibtheo.com/bibliography.
Avoid the following resources in an academic research paper. They are listed on every website’s Commentaries list because these sources are so old that they are out-of-print and therefore free. They will contain some good ideas, but these sources do not represent the current state of Biblical knowledge.
Warren Wiersbe for example – who generally speaks kindly of Matthew Henry – also says, “Matthew’s purpose in writing the Commentary was practical, not academic. [After Matthew passed away,] several of his pastor friends gathered up his notes and sermons and completed the Commentary from Romans to Revelation. When you read their expositions, you can see how far short they fall of the high standard set by the original author” (10 People Every Christian Should Know). Yet regarding Matthew’s own work in the Commentary, Wiersbe continues, “there were times when he spiritualized the text and missed the point; but generally speaking, he did his work well…[Yet] you will not find Matthew Henry grappling with big problems as he expounds the Word, or always shedding light on difficult passages in the Bible. For this kind of help you must consult the critical commentaries. He did not know a great deal about customs in the Holy Land…the student will need up-to-date commentaries and Bible dictionaries to help him [or her] in that area” (10 People).