Lying is not an honor, since this is not pleasing to God, it is something that the wicked uses a lot, to get out of any mess and to create dissension among others. Bearing false witness against another person is a big problem because it can cause fights and even physical abuse.
That is why it is not good to lie or give false testimony to others. If your neighbor is doing something wrong and is out of control, talk with him patiently, help him and tell him how things should be, treating him with meekness and humility. This way, all kind of problems that could happen will be avoided.