Melchizedek may have been the third antediluvian king Enosh
by Fr. Pancras
(Tuticorin, Tamilnadu, India)
The third antediluvian king Enosh is likely to be associated with Melchizedek who could represent Agasthiyar as well. He was one of the Antediluvian Patriarchs (Enosh), allowed to live a very long life in order to help establish God's chosen nation?” Source: https://www.historyofisrael.com/melchizedek.html
The antediluvian kings having considerably longer life-spans than the postdiluvian ones, Agasthiyar who plays the part of the biblical Melchizedek had a long span of life (at least 12,000 years) living both before and after the flood, and had established and nurtured all the three Tamil Sangams from 9600 BC to 600 AD. Source: http://forum.yogananda.net/index.php?/topic/17800-the-amazing-great-pyramid/