Analysis of information sources in references of the Wikipedia article "Hilaria" in English language version.
The idea that the 'resurrection' of Attis was due to a 'devilish countefeit' certainly proves how, in the eyes of one Christian, but also in those of a 'pagan' inclined to lay claim to the meaning of his own beliefs, Attis must have seemed dangerously similar to Jesus Christ.
Hilaria[:] In the last several centuries before the fall of the Roman Empire (476 A.D.), Roman devotees of the goddess Cybele celebrated a festival of laughter and rejoicing on March 25. [...] On March 25 the whole tone of the festival suddenly switched from grief to gaiety, as folllowers of the god celebrated his revivication.