I have purchased two commentaries on 1st John after researching comments and recommendations of many professors and Pastors on which ones they thought were the best. I have also found three sermon series on 1 John done by pastors, with whom I have confidence in their doctrine and scholarship. My new goal is to listen to all the sermons and read both commentaries next year as I memorize 1 John. At some point, after I have gotten the book memorized well, the commentaries read, and the sermons listened to, I will begin writing a sermon series of my own on 1st John.