what does extrabíblicas mean?
As in... Ambos años aparecen en fuentes extrabíblicas...
3 Answers
in sources aside (othet than) the bible.
and in many circles it means anything that is not in the Canon of Scripture.
I would say that it means sources other than the Bible. (beyond the Bible)
Googling it seems to deal with secular writings about "historical" Jesus (based on historical writings; not the Bible) or using Jewish tradition and other Jewish writings to support what is said in the Bible.