You can find several treatments of the International Sunday School Lesson. Personally, I use the NIV® Standard Lesson Commentary® published by the David C Cooke company. I have used this text for more than five years. This gives me a good introduction to the lesson that week. However, it is ONLY an introduction to the lesson. I do not follow their outline during my presentation but I do recommend that you read it, or another comparable text, before listening to my program. It really helps to prepare your heart and mind for the teaching. You can purchase a copy from Amazon for your kindle or https://amzn.to/3PT7nX2. Please note: As an Amazon Associate I earn from qualifying purchases.