'Lie' in the Bible

If we say that we have fellowship with Him and yet walk in the darkness, we lie and do not practice the truth;

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

As for you, the anointing which you received from Him abides in you, and you have no need for anyone to teach you; but as His anointing teaches you about all things, and is true and is not a lie, and just as it has taught you, you abide in Him.