It has always seemed to me that if ancient Egyptian religion had survived to modern times, it might look quite a bit like Hindu religion in India today.
For instance, in a Hindu temple, puja or worship happens several times a day, including a morning service that serves to awaken the Deity indwelling the temple. This is very much like the thrice-daily services in an ancient Egyptian temple, including a morning awakening. The puja is basically an offering ritual; just as the Egyptian daily rites were. In both India and Egypt, the sacred image of the Deity is important; the Goddess or God is honored in and through the sacred image of the Deity and the image is considered to be imbued with some of the energy of the Deity. Holy magic is to be found in both ancient Egyptian texts, such as the Pyramid Texts, and in ancient Indian texts, such as the Vedas. Home shrines and home worship were and are important to both cultures.
We know that there was a great deal of contact between the Greek world and India from the time of Alexander the Great onward. For a while, Greeks even ruled parts of northern India. There is a whole genre of Graeco-Buddhist art in which we begin to see typical Greek details come into Indian sacred art (and vice versa). Apollo seems to have made a particular impression. Dionysos made His inroads as well, perhaps even before Alexander. Alexander recorded that when he entered into the Swat valley of India, now in Pakistan, he encountered a free city of Greeks who claimed to be the descendants of the soldiers of Dionysos. The city was called Nysa (one of the sacred mountains of Dionysos). The Nysians welcomed Alexander as a fellow Greek, promptly pointed out their sacred mountain, crowned Alexander’s army with ivy and vine, and proceeded to throw a Bakchic festival that lasted ten days.
All this is simply to point out that it would not be at all strange to find Isis making a home in India as well. I’m looking at a small ebook right now by amateur scholar Mogg Morgan that attempts to prove that the Tamil Goddess Pattini is Isis. According to Morgan, 9th-century-CE Hindu reformers drove Her rites out or underground and Kali was worshipped in Her place.
Today, Pattini is a Goddess honored by both Buddhists and Hindus as a patroness of Buddhism and a Goddess of health, healing, and chastity. She is especially prominent in Sri Lanka.
Pattini’s story is one of apotheosis; a human who becomes a Deity. Pattini was originally a human woman named Kannagi who was happily married to a man named Kovalan (or Palanga). Everything was wonderful until Kovalan strayed and spent all their money on a famous courtesan. Yet Kannagi forgave him and provided him with the last bit of their wealth, a gold anklet. Kovalan was to trade it and rebuild their fortune. But at this same time, an anklet that looked just like Kannagi’s was stolen from the queen. Kovalan was accused and brutally butchered. Kannagi searches for Kovalan, eventually finding him dead. Mourning, she proves that Kovalan was innocent, but in revenge, tears out one of her breasts, dashes it to the ground, and a huge fire breaks out in the city. Kannagi, showing herself to be the epitome of wifely duty and chastity, is deified as Pattini.
You see where we’re going here, right? Happy couple, husband unrightfully killed, perhaps dismembered (some accounts just say beheaded), wife/Goddess taking revenge. I get it; but I’m not super convinced yet. But wait, there’s more. A guardian God of the city where all this takes place comes to Kannagi and tells her that she will see her dead husband again in fourteen days time. Yet he will not be in the form of men of this earth; he will be in heavenly form. The fourteen-day time period is significant: Osiris is cut into 14 pieces and 14 are the days in half a moon cycle. Osiris is, in one aspect, a lunar God, so the 14 days may be considered the time from new to full moon, or in this case, from full to dark, a period in which He is dead. After the 14 days, He appears to Kannagi/Pattini in heavenly form. Osiris, His 14 pieces reassembled by Isis, is resurrected in heavenly form, too, as Lord of the Dead, rather than restored to His previous life.
This is pretty thin evidence, but interesting. Given the strength of Isis’ cult, the relations between the Graeco-Roman world with India, and the propensity of merchants and sailors to bring Isis’ worship with them to harbor cities, it seems almost certain that Isis worship would have come to India. After all, the Oxyrhynchus Papyrus tells us that Isis brings the flood tide of the Ganges as well as that of the Nile. But is Pattini Isis? I don’t know. It bears more research. I’ll let you know if I find out anything interesting. In the meantime, what do you think?