To become an expert on a particular subject, you have to study it in detail. This type of study requires you to hear and read the same material repeatedly until you practically have the subject memorized. And when you have the subject memorized, it becomes a part of you, affecting the way you think and what you talk about, making you an expert.
If you are a follower of Jesus, what if the subject you knew in and out was the gospel? What kind of effect would that have on your life? More importantly, what kind of effect would that have on the lives of those around you?
Listen in to this third part in the 1 John series with Pastor Erin has he talks about how to fulfill the "New Old Commandment" in 1 John 2:3-17.