Series through 1 John.

Mounce & Mounce- Zondervan Greek and English Interlinear New Testament

Frank E. Gaebelein- The Expositors Bible Commentary

Steven J. Lawson. The Bible Study podcast.

John MacArthur & Mayhue- Biblical Doctrine

John MacArthur- Study Bible.

Charles Spurgeon- Commentary on 1 John.

Bob and Monte Shanks- Lessons on 1 John