So Jesus said to the Jews who had believed him, “If you abide in my word, you are truly my disciples, and you will know the truth, and the truth will set you free.”
You are of your father the devil, and your will is to do your father's desires. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he lies, he speaks out of his own character, for he is a liar and the father of lies.
He who walks blamelessly and does what is right and speaks truth in his heart; who does not slander with his tongue and does no evil to his neighbor, nor takes up a reproach against his friend.