As for you, the anointing which you received from him remains in you, and you don't need for anyone to teach you. But as his anointing teaches you concerning all things, and is true, and is no lie, and even as it taught you, you will remain in him.

 2:3-6 And it is by this that we know that we have come to know him--if we keep his commandments. He who says, "I have come to know him" and who does not keep his commandments is a liar, and the truth is not in such a man. The love of God is truly perfected in any man who keeps his word. This is the way in which we know that we are in him. He who claims that he abides in him ought himself to live the same kind of life as he lived. 