Zechariah 8:23 (NKJV)
23 “Thus says the LORD of hosts: ‘In those days ten men from every language of the nations shall grasp the sleeve of a Jewish man, saying, “Let us go with you, for we have heard that God is with you.” ’ ”
The Bible does not name this language.
The Adamic language, according to Jewish tradition (as recorded in the midrashim) and some Christians, is the language spoken by Adam (and possibly Eve) in the Garden of Eden. It is variously interpreted as either the language used by God to address Adam (the divine language), or the language invented by Adam with which he named all things (including Eve), as in the second Genesis creation narrative (Genesis 2:19).
we cannot know if the Adamic language existed, or its nature; we don’t know if Chaldaic (the common language before Babel) was the same as Adamic,