Using Peoples' Titles in a Nonfiction Book

I am still working on my nonfiction book on praying passages in the Bible. It’s all done except for formatting chapter headings, adding more epigrams (hard to find than I expected), creating some callouts, and most important, adding a few more quotations. Lots of nonfiction Christian books quote other people. Sometimes, I am really surprised that the author found someone saying exactly what she wanted. I’m trying to write for a general audience from a scholarly “location.” That is, I talk about the structure of a thanksgiving psalm, for example. That’s not all the book is, but it certainly has that as my voice. It’s more academic than Max Lucado, but that’s not my hoped-for audience. Here’s my question. I don’t have a lot of quotations, but I do have them occasionally. If I quote someone who is likely unknown to my audience, but has the status of someone to be listened to, e.g., NT scholar Jane Smith, should I preface the person’s name with, “According to NT professor Jane Smith…,” or should I just say, “According to Jane Smith,” and leave it to the reader to look at  my few footnotes to get an idea about the author? Writing for others in my field, they would know who Jane Smith is, but general readers have probably never heard of her. What do you think? Do I need to add the extra info to give the quotation more authority, or simply use it and assume my audience will trust me or not care? Thanks.

Ken