The only way Satan can effectively be the Father of lies is by knowing the truth so well. 
Our lives are not so much a quest to gain truth as it is to live by the truth that has been revealed to us. Our problem is often not that we are unaware of the truth. Our problem is that we are painfully aware of the truth and we rebelliously reject it. Lying is not a problem of information it’s a problem of knowing the truth but not liking it.
Idolatry is at the heart of lying. How more prideful and idolatrous can you be than to stare reality in the face and attempt to reconstruct it with a reality of your own making?
The only hope we liars have is that the truth of the gospel might penetrate our hearts in such a way that we love reality more than a lie.
