in the early period there was no religion called Hinduism and Tamil isn't an Indo-Aryan langauge
Number one language on our list, Tamil, is the oldest language in the world. This language has survived all the upheavals of human history and sustained itself all the way for 5000 years. Tamil Literature is gigantic, Tamil speakers are enormous and spread across the southern Indian states and the Sri Lankan country. However, it is not much popular in the northern states.
https://wikiageheight.com/top-10-oldest-languages-in-the-world/
Here is the list of 10 oldest languages in this world:
1. Tamil
Tamil is regarded as one of the oldest languages in the world. It is still in vast use. About 78 Million people across the world still use this language as their medium of verbal communication. The earliest example of Tamil language is traced back to the period around 300 BC. But experts have presented the view that the origin of this language can be traced back to around 3500 BC because Tholkapiyam, a Tamil work is dated around 2300-3100 BC.
http://www.metroeasy.com/oldest-languages.html
Krishna worshipped 5000 yrs ? any historic or archaeological, evidence to proof ?