Here's a short story:

Syncretism () is the combining of different beliefs, while blending practices of various schools of thought. Syncretism involves the merging or assimilation of several originally discrete traditions, especially in the theology and mythology of religion, thus asserting an underlying unity and allowing for an inclusive approach to other faiths. Syncretism also occurs commonly in expressions of arts and culture, (known as eclecticism) as well as politics (syncretic politics). 

The English word is first attested in the early 17th century, from Modern Latin "syncretismus", drawing on Greek ("synkretismos"), meaning "Cretan federation". 

The Greek word occurs in Plutarch's (1st century AD) essay on "Fraternal Love" in his "Moralia" (2.490b). He cites the example of the Cretans, who compromised and reconciled their differences and came together in alliance when faced with external dangers. "And that is their so-called "Syncretism" [Union of Cretans]". 

Erasmus probably coined the modern usage of the Latin word in his "Adagia" ("Adages"), published in the winter of 1517–1518, to designate the coherence of dissenters in spite of their differences in theological opinions. In a letter to Melanchthon of April 22, 1519, Erasmus specifically adduced the Cretans of Plutarch as an example of his adage "Concord is a mighty rampart". 

Overt syncretism in folk belief may show cultural acceptance of an alien or previous tradition, but the "other" cult may survive or infiltrate without authorized "syncresis" nevertheless. For example, some Conversos developed a sort of cult for martyr-victims of the Spanish Inquisition, thus incorporating elements of Catholicism while resisting it. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What is syncretism?
Guess: the combining of different beliefs, while blending practices of various schools of thought

Question: When was it first attested?
Guess: the early 17th century,

Question: and in Greek?
Guess: 1st century AD

Question: where does it commonly occur?
Guess: in expressions of arts and culture,

Question: anything else?
Guess: as well as politics

Question: In English what two languages is it derived from?
Guess: Modern Latin and Greek

Question: In Greek, did it appear in an essay?
Guess: yes

Now answer the following question in the same format.

Question: What was the name of it?

an essay on "Fraternal Love" in his "Moralia Untitled though