I have not written to you because you don't know the truth, but because you know it, and because no lie is of the truth.

 2:7-8 Beloved, it is not a new commandment which I am writing to you, but an old commandment which you had from the beginning, the old commandment is the word which you heard. Again, it is a new commandment which I am writing to you, a thing which is true in him and in you, because the darkness is passing away and the light is now shining. 