John 9:23 Commentary - Garner-Howes Baptist Commentary
1) "Therefore said his parents,'' (dia touto hoi goneis autou eipon) "On account of this his parents replied," answered the question as they did on point three, Joh 9:19. To be totally excluded or suspended, a third time, after two successive 30-day suspensions from the synagogue, was similar to being a leper, separated from social touch with the masses of the Jews.
2) "He is of age; ask him." (hoti helikian echei auton eperotesate) "He has age (is of legal responsible age) you all ask him." And accept his testimony about the latter question especially, on which he has experimental, personal knowledge, Joh 9:21; Rom 14:11-12.
Consult other comments:
John 9:23 - Abbott's Illustrated New Testament
John 9:23 - The Cambridge Bible for Schools and Colleges
John 9:23 - Companion Bible Notes, Appendices and Graphics
John 9:23 - Ellicott's Commentary for English Readers (Old and New Testaments)
John 9:23 - Garner-Howes Baptist Commentary
John 9:23 - John Gill's Exposition of the Entire Bible
John 9:23 - William Godbey's Commentary on the New Testament
John 9:23 - English Annotations on the Holy Bible by Matthew Poole
John 9:23 - Old and New Testaments Restoration Commentary
John 9:23 - Robertson's Word Pictures in the New Testament
John 9:23 - John Trapp's Complete Commentary (Old and New Testaments)
Garner-Howes Baptist Commentary

The Garner-Howes Baptist Commentary of the Whole Bible was originally published as a 23-volume set by Albert Garner (principal author) along with J. C. Howes, G.F. Crumley, and Eugene Garner in 1985. The Blessed Hope Foundation has released this digital edition into the public domain.