2 And He Himself is the propitiation for our sins, and not for ours only but also for the whole world.
3 Now by this we know that we know Him, if we keep His commandments.
4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him.
5 But whoever keeps His word, truly the love of God is perfected in him. By this we know that we are in Him.
6 He who says he abides in Him ought himself also to walk just as He walked.
7 Brethren, I write no new commandment to you, but an old commandment which you have had from the beginning. The old commandment is the word which you heard from the beginning.
8 Again, a new commandment I write to you, which thing is true in Him and in you, because the darkness is passing away, and the true light is already shining.