Dealing With People Who Lie

Be careful and in my experience I suggest stay away from anyone without any consideration for who they may be who is content to live as it says in Proverbs 10:18; “He who conceals hatred has lying lips, and he who spreads slander is a fool.” The reason is that they will take you down into their hell with them if you choose to follow them for the sake of comfort, familiarity or loyalty.
We all have lied at some point in our lives and many of us have believed something that was a lie. But the true measure of your character is how you respond to the lie when you either realize or learn what is true.
Therefore, if you have extended a sincere hand and heart of reconciliation to those who has lied to or about you, done you wrong in some manner or even choose to avoid you, all that is left is to accept their decision and walk away free of the burden of their injustice. If they say they follow Jesus, but do not seek the ministry of reconciliation or even make an attempt to do what the first verse of the second chapter of First Peter instructs, “…putting aside all malice, deceit, hypocrisy, envy and slander” then you have little reason to continue catering to their ideas of loyalty or relationship, because they are more comfortable with the perceptions of others than they are the purpose of relationship.
Let no one deceive you with empty words, because of these things the wrath of God comes upon the sons of disobedience.” — Ephesians 5:6
Although it is avoidable and unfortunate, but “a false witness will not go unpunished, and he who tells lies will perish.” — Proverbs 19:9
Therefore, stop living in the past and in the life of their words of death towards you. A liar will destroy you if you believe what he/she says. Love and respect people for who they are, even the liar. They may not always demonstrate love and respect towards you and it doesn’t mean you allow them to ruin your life by being associated with them in their life. It simply means you follow the commandment to love one another, practice the ministry of reconciliation and if someone chooses not to accept either, then don’t waste any more of your time; respect their decision and continue doing what you’re doing.
Let a liar lie. Truth always catches up.