Lying

Lying is not the inverse of truth but one step before truth. The lying person knows very well about the truth and he will manipulate from near to the truth. 
We believe the lie as truth, when it is so close to the truth, but not opposite. The liar knows his lie should be as far as close to the truth. 
Hence he practices truth and then he will try to be away from truth in order to cheat.

Why Judas betrayal was considered a highest crime because Judas was close to Lord Jesus. He was seen as one of the best disciples among the twelve around Jesus. The Judas was close to the truth of the word “Disciple” and he just moved a little away from that stage to take money to reveal who Jesus is.
If Judas was never so close to Lord Jesus then no one will be talking about him. If you watch the liar first he has to practice the highest form of truth before using the weapon on lying or cheating. That is what Judas did and that’s why we are all shocked.

Not all lies will end up in sin. If you want to save a person you can lie then such lie will be treated as truth in the eye of civilisation. You should not kill another human but during Wars, The soldiers are licenced to kill their enemies. Why we love James Bond movies is because he was licensed to kill in his assignment. 

But lie is always a lie and cannot become truth cuz you moved one step away from truth will not consider it as an excuse whatever you are. The lie and truth belongs to the byproduct of tribal culture. You should not betray your own people. If you betray you will be punished. But to betray or lie you should earn 100% truth in your behavior, before you move to the next stage of cheating or lying. 
You cannot straight away lie to a person unless he takes you and believes you that you are one among them. 

Lies need truth. If any person is 100% good to you then he is qualified to cheat or lie to you. Hence be careful with your friends.
because friends can cheat not your enemies. Why?
You never do business with your enemies…