The essence of lying is not in asserting false facts or denying true fact; the essence of lying is at the level of motivation - of concealed motivation, or faked motivation.
To be A Liar is not to be motivated by truth; and to lie about that fact.
Considered thus; our society is riddled-with, and permeated-by and structured-on lies. Very, very few individuals and zero mainstream institutions are truth-motivated.
Jesus was clear that lying is definitive of the devil - it follows that our society is demonic in its essence.
We need look no further (although clearly lying is not the only prevalent sin) - this is sufficient. To be A Liar - that is to live in a lying society and not to notice, to deny the fact, and not to repent - puts us into the devil's party.
And if we are liars we cannot hear the truth: we have already decided against the truth; and against salvation.
To be a liar is to be self-damned and with no way out.
It really is as simple as that.
To seek and speak truth, and repent all lies, is perhaps the single most radically Christian act imaginable: here-and-now.
Lacking-which, nothing can be done.
John 8: 31 Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed;
32 And ye shall know the truth, and the truth shall make you free.
33 They answered him, We be Abraham's seed, and were never in bondage to any man: how sayest thou, Ye shall be made free?
34 Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin.
35 And the servant abideth not in the house for ever: but the Son abideth ever.
36 If the Son therefore shall make you free, ye shall be free indeed.
37 I know that ye are Abraham's seed; but ye seek to kill me, because my word hath no place in you.
38 I speak that which I have seen with my Father: and ye do that which ye have seen with your father.
39 They answered and said unto him, Abraham is our father. Jesus saith unto them, If ye were Abraham's children, ye would do the works of Abraham.
40 But now ye seek to kill me, a man that hath told you the truth, which I have heard of God: this did not Abraham.
41 Ye do the deeds of your father. Then said they to him, We be not born of fornication; we have one Father, even God.
42 Jesus said unto them, If God were your Father, ye would love me: for I proceeded forth and came from God; neither came I of myself, but he sent me.
43 Why do ye not understand my speech? even because ye cannot hear my word.
44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
45 And because I tell you the truth, ye believe me not.
46 Which of you convinceth me of sin? And if I say the truth, why do ye not believe me?
47 He that is of God heareth God's words: ye therefore hear them not, because ye are not of God.