In Catholic theology, scandal is a behavior or attitude that leads another to sin. In order to qualify as scandalous, the behavior must, in itself, be evil or give the appearance of evil. To do a good act or an indifferent act, even knowing that it will inspire others to sin — as when a student studies diligently to do well, knowing it will cause envy — is not scandalous. Again, to ask someone to commit perjury is scandalous, but for a judge to require witnesses to give an oath even when he knows the witness is likely to commit perjury is not scandalous.