I don’t know who is lying and it doesn’t matter. I’m just going to point out what God has to say on the subject.
You shall not give (answer as in a court of law) false witness against your neighbor. Exodus 20:16
The faithful witness tells what is right, but a false witness speaks deceit. Speaking recklessly (rashly) is like the thrusts of a sword, but the words of the wise bring healing. The one who tells the truth will endure forever, but the one who lies will last only for a moment. Deceit is in the heart of those who plot evil, but those who promote peace have joy. Proverbs 12:17-20
A false witness (a witness of lies) will not go unpunished, and the one who spouts out (breaths out lies) lies will not escape punishment. Proverbs 19:5
(Jesus said) “I tell you that on the day of judgment, people will give an account for every worthless word they speak. For by your words you will be justified, and by your words you will be condemned.” Matthew 12:26-27
Blessed are those who wash their robes so they can have access to the tree of life and can enter into the city by the gates. Outside are the dogs and the sorcerers and the sexually immoral, and the murderers, and the idolaters and everyone who loves and practices falsehood! Revelations 22:14-15
So, whoever is lying — and they know which they are — might want to pay close attention to what real judgment on their behavior will look like because God promises there is punishment not just for lying, but for the disruptions caused by lying.