“Understanding Romans: A Verse-by-Verse Analysis” is now available on Amazon.com as a paperback, ebook or audiobook. It is also available on Audible.com. Here it is on Audible.com: https://www.audible.com/pd/Understanding-Pauls-Epistle-to-the-Romans-Audiobook/B081BDSZ3Z?qid=1574033666&sr=1-3&pf_rd_p=e81b7c27-6880-467a-b5a7-13cef5d729fe&pf_rd_r=YTXMC5CJW29020SNRDVS&ref=a_search_c3_lProduct_1_3