The Old Testament was originally written in Hebrew but that was probably not the language of Adam and Eve because living language changes. read more
Any contemporary theory dottily arguing that Hebrew, whether spoken by Adam and Eve in the Garden of Eden or by someone elsewhere, was the original language of mankind, and that all other human languages derive from it, indeed deserves most of the above epithets; yet one has to lack both a sense of humor and historical perspective to consider it either dangerous or a disgrace. read more
Insofar as Adam and Eve are the first homo sapiens, they did not have language. Not as we define language today. But in the biblical account from Genesis chapter three, Adam and Eve converse with each other, the serpent, and with God. read more
The Adamic language is, according to Jewish tradition (as recorded in the midrashim) and some Christians, the language spoken by Adam (and possibly Eve) in the Garden of Eden. read more