This article describes a search for the etiology of the belief present among some Pentecostals that the shout “Hip! Hip! Hurrah” has anti-Semitic roots. Authors are interested first of all in documentary sources of such a belief among believers since antiquity till modern neo-Pentecostal narration. Those who accept as true anti-Semitic provenance of the shout think that it came from Rome, where supposedly it was raised by Roman senators in honour of Emperor Titus – the vanquisher of Jerusalem and destroyer of the temple in 70 BC – although in form of Hep! Hep!, an acronym for Hierosolyma est perdita. Authors of the article being sort of biographers of the phrase, try to separate fiction from facts. Precise linguistic research has been supplemented by elements of the history of ideas. Some concluding remarks about the origins of the shout show how deeply language motivates people and on the other hand how strongly people and their beliefs influence language.