A “false” (8267) “witness” (5707) is a liar. The Bible has a special contempt for liars. This is the same phrase used in the Ten Commandments.
EXO 20:16 "You shall not bear false witness against your neighbor.
We have so many ways to trying to get around this. I like to define a lie as “communication with intention to deceive.” I don’t know if I made that up or read it somewhere but it has the idea that a lie is in the intent of the communicator not in the actual words used.
Liars will not go "unpunished” (5352). This does not have a time stamp. There is no promise that the punishment will be during your life time or that you will be aware of it. The promise is that it will happen. Many people are feathering their bed in Hell as they prepare for eternity. It is their choice, not God’s ordination. Liars are in the list of specific people who will burn in Hell.
I would also think that as people begin to know you are a liar, it will effect your everyday life. They may act like your are cool but if you ever need to be trusted, you won’t be. One of the basic bed rocks of community living is being able to trust others. Without it, all begins to crumble.
He who “tells” (6315) “lies” (3577) cannot get away from the judgement of God. It is offensive to the very nature of God. How did Jesus describe Himself? He said He is the way, the truth and the life. We are saved by grace, through faith. Faith involves accepting the truth of who Jesus is and what He did for us. Our walk with the Lord is guided by the written word. We must accept it as being true. Liars are so disgusting to God that they are cast into the fire. Don’t be a liar.