[S0122017]

SANSKRIT
http://en.wikipedia.org/wiki/Sanskrit
The original form, Vedic Sanskrit, was probably in use as early as 1800 BC.



ARCHAIC EGYPTIAN
http://en.wikipedia.org/wiki/http://en.wikipedia.org/wiki/Egyptian
Archaic Egyptian (before 2600 BC)
Old Egyptian (2600 BC – 2000 BC)



SUMERIAN
http://en.wikipedia.org/wiki/Sumerian_language
The Sumerian language of ancient Sumer was spoken in Southern Mesopotamia from at least the 4th millennium BCE.



HEBREW
http://en.wikipedia.org/wiki/Biblical_Hebrew_language
Biblical Hebrew is further divided into the so called 'Golden Age' Hebrew (1200 BCE to 500 BCE) and 'Silver Age' Hebrew (500 BCE to 60 BCE).

I havent been able to find a wiki page on negev Hebrew, that is the language which is the predecessor of biblical Hebrew, but I remember it was dated at around 4th century BC at least, and some claim it is older. At least Egyptian and Sumerian language is older than Sanskrit.

[little jeremiah]

Wikipedia is made out of whatever people put into it. I wish I had time to investigate and post on this thread. I'll ping Gengis again, maybe he'll have time. The history you're depending on is "fluid".