The idiom "wolf in sheep's clothing" has its origin in the biblical reference found in the Gospel of Matthew (7:15): "Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves." The phrase signifies a person or thing that appears harmless, innocent, or gentle on the surface but conceals malicious, deceitful, or dangerous intentions. This expression is now commonly used to warn against trusting or being deceived by individuals or situations that mask their true sinister or harmful intentions.

What is the origin of the idiom "wolf in sheep's clothing" and when to use it?

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wolf in (sheep's|lamb's) clothing

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Definition und Bedeutung von „wolf in sheep's clothing“ im Englischen

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