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In the 4th century a series of synods produced a list of texts equal to the 39 , 46 , 51 , or 54-book canon of the Old Testament and to the 27-book canon of the New Testament that would be subsequently used to today , most notably the Synod of Hippo in 393 CE .
 393 CE
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 393 CE