Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently:

 We must repeat that this does not mean withdrawal from the world; but it does mean that the Christian sees all things in the light of eternity and life as a journey towards God. It is this which decides the importance which he attaches to anything; it is this which dictates his conduct. It is the touchstone and the dynamic of his life. 