Again those of us who say, "Don't Lie" are being called Pharisees because we are perceived as trying to emphasize minutiae (as if "God is Truth" is an example of nit-picking).
I am not talking about the little things.
I am now, and have always been, talking about the one big thing.
Jesus is the Way, the Truth and the Life.
To follow Jesus, Live the Truth.
The truth is love, and you can't love by witnessing to a lie, for the devil is the father of lies and we become his sons if we love the lie.
You belong to your father, the devil, and you want to carry out your father's desires. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies. (John 8:44)
So Live the Truth.
Or lie through your teeth, and may your conscience give you rest. Because the Holy Spirit and His Magisterium won't.