Catholic Dictionary

Find accurate definitions of over 5,000 Catholic terms and phrases (including abbreviations). Based on Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.

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DELUSION

An erroneous belief that a person thinks is true in spite of every reasonable evidence to the contrary. A delusion is a false faith; it is fixed, persistent, and is a systematic principle for all of one's actions. More than once the Israelites were warned not to be seduced by the delusions of the false prophets (Isaiah 23:26).