1 John 3:10-18
What is a Christian? How can you tell the difference between a genuine Christian and a phony? Can you be certain that you yourself are the real thing? John explains that it is in fact possible to know whether or not you are a genuine follower of Jesus Christ. One of the ways we can know if we are genuine is if we regularly show selfless love toward our Christian brothers and sisters. But if we lack this kind of love in our lives, that is evidence that we do not have true life — eternal life! — residing in us. No love…no life!