‘Judge not lest ye be judged’ has everything to do with the 8th commandment. God says your reputation is valuable enough to defend. It’s sinful to attack the reputation with words every bit as much as it’s sinful to attack the body with weapons. Breaking the 8th commandment is punishing your neighbor by hurting his reputation. It’s judging. Worse, to judge in this way is to speak against the judgment of forgiveness won upon the cross. Judge not, but find your neighbor’s judgment with your own on the cross. You are forgiven.