John is speaking to the Church in I John 2:3 and tells us that we have a new commandment, "Love One Another". When Christ comes into our heart, our desires, our will, our attitudes all change we desire to please God. We serve God out of love, not because we have to, or there is some law that says we have to or go to jail. Have you ever wondered what some people have that you don't ? Some people pray to God but never give themselves completely and never receive true change in their heart. Have you ever seen Christians that just seem to be full of love for God and for people ? It's Salvation, when you receive it, you'll know it, and you'll never be the same !