The bearing of false witness is forbidden, but this must not be limited merely to testimony given in the law court or under oath. Isn't it a condemnation that men have to be put under oath in order to make sure of their speaking the truth? As a legal offence, _perjury_--the bearing of false witness when under oath--is one of the most serious crimes that can be committed. Nearly every civilized nation visits it with heavy punishment. Unless promptly checked, it would shake the very foundations of justice.
_Lying_--uttering or acting falsehood--and _slander_--the spreading of false reports tending to destroy the reputation of another--are two of the most common violations of this commandment.