The ninth commandment says "You shall not bear false witness against your neighbor."
It is a specific commandment concerning statements about another.
Soldier, this one is so easy to violate. Gossip falls under this commandment. So does offering a slanted report of a disagreement in order to gain support. Jealousy, greed, insecurity and irritation all tend to launch burning temptation into the tongue. So often, it is almost impossible to resist some barb or even a disguised comment that give an impression that may not be accurate.
The flesh always wants to even the score. The flesh feels vindicated when it gets another person to agree with it. But the flesh is wrong and this behavior opens the door for the enemy to make camp in the festered area of the disobedient soul.
You are a Soldier of The Cross and your commitment is to follow Him. To move by prayer. To let Him discipline you with regard to everything, the tongue included. To be made into His Likeness.
James say if one has complete control over his tongue, he is perfect. I don't know about you, but I am not perfect and I make mistakes. I have made it a goal of my Christian life to govern the tongue, but I am convinced that is this life, we will always need His discipline in this area.
I have learned the precious value of refusing to speak about other Christians or anyone else for that matter, in a way that might not be accurately representative of the situation. It's an essential part of serving the Lord. It is also a protection against cancer of the soul, which comes not to the one being misrepresented, but to the one with the loose tongue.
The Holy Spirit will check the one who is listening for Him.
Tell Him. Aloud.