1 John 2:4

“You are of your father the devil, and you want to do the desires of your father. He was a murderer from the beginning, and does not stand in the truth because there is no truth in him. Whenever he speaks a lie, he speaks from his own nature, for he is a liar and the father of lies.

They profess to know God, but by their works they deny Him, being detestable and disobedient and unfit for any good work.

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

If we say that we have no sin, we deceive ourselves and the truth is not in us.

And by this we know that we have come to know Him, if we keep His commandments.

If someone says, “I love God,” and hates his brother, he is a liar; for the one who does not love his brother whom he has seen, cannot love God whom he has not seen.