In this short book, John covers the theme of love he addressed in 1 John. We are to love one another, in obedience to the commands of Jesus. And we are not only to love in certain situations, but to walk in love--it is to be a way of life, a daily exercise.

John also warns against false teachers in these few verses--going so far as to say not to bring them into the homes of believers. Many false teachings were springing up at this time in the early church life, and John wanted his readers to walk in the truth, and not be misled by falsehood.

If we walk in the truth and in love and have the Holy Spirit within us, we will be able to discern lies from what is good and right. We need to seek the Scripture and run from those who would lead us astray. When we are immersed in God's Word and in tune with his Spirit within us, we can follow the truth and lead others down a path of righteousness.