The story from Bangladesh that describes the creation of the world, the first people, the making of alcohol after listening to the chief spirit, the destruction of the world with fire-rain, repopulating the world afterward, living on a plain, and being divided into different groups comes from pgs. VII-19 in Bodding, P. O., Traditions and Institutions of the Santals. Gyan Publishing House, 2001. The material comes from L. O. Skrefsrud (see pg. Vii in the above source) who is given as a Norwegian missionary in the article on pg. 187 here. Skrefsrud got the information from an “old guru” in 1871 according to pg. 1 the above Bodding source. Referring to the Bodding source, the creator of the Santals is called Thakur Jiu (the supreme god according to pg. VII and referenced as the creator on pg. 3). The being that convinces the couple to make alcohol is called “Lita” (pg. 6) with the footnote on that page noting that “Lita” Is the chief “bonga” and is always called “Maran buru.” The “bongas” are “spirits” according to the article here. There is some combining of the roles of creator and tempter in the Santal story, though. First, while in Genesis God is the creator and the serpent tempts Eve and Adam and Eve then hide from God and confess to Him (see Genesis 1-3 and specifically Genesis 3:8-10 for hiding from God), in the Santal story of temptation and sin, “Lita,” encouraged the people to brew beer but then they hid from and confess to “Lita,” the tempter, rather than to God. In addition, in the Santal legend, the people are tempted and make alcohol, but the emphasis of their crime appears to be intercourse given references that the couple “commenced to toy amorously; continuing this they both drank all and also became very drunk. It became night, they lay down together.” This is followed by the confession that, “last night when we had become drunk from beer, we have done something bad” which puts the emphasis on “something” rather than the drinking itself (quotes from pg. 6 in Bodding source). This Santal legend stands in contrast to the instructions in Genesis where God commands people to “be fruitful and multiply” (see Genesis 1:28 before sin, with the sin only coming later and clearly given as disobedience in eating the fruit from the Tree of the Knowledge of Good and Evil (see Genesis 3:11 not some other unknown crime. Finally, the reaction of “Lita” of smiling and dismissing the crime (again from pg. 6 in Bodding source) further makes it clear that Lita parallels the serpent (Satan) in the Genesis story, not the Creator (that said, pgs. 14-19 in the Bodding reference have another version of the legend in which Maran buru seems to be more of a messenger of the creator, as best I can tell, with a comment on pg. 19 noting that this is a different role for Maran buru than is usually given). With all the parallels between the Santal story and the history in Genesis, I would expect there to be debate over whether the Santal story was influenced or modified by contact with Christianity. Later in the legends Skrefsrud records, the Santal source does mention past animosity with Muslims (pgs. 12-13 in Bodding source) and since Islam arose after Christianity (see here which gives the founding as 622 AD), it suggests at least some contact with the outside world after Christianity began. Furthermore, after telling the story recorded by Skrefsrud, the translator of the above book adds additional legends and suggests (see pg. 14) that the language used to describe creation in one of those legends sounds Christian, though the source of that material is unclear to me. On the other hand, to me there are a few things that support the idea that the stories told to Skrefsrud were true Santal memories and beliefs. First, the story of creation recorded on pgs. 3-5 in the Bodding source doesn’t closely follow the history from Genesis. The story does start with the the world being only water with land under it and the creator making several animals, and forming people from the ground, but then the story diverges. The sculpted people are trampled by the “Day-horse” (which may be the sun according to footnote 2 on pg. 3). Then birds are made instead. When the birds have no food, the god asks help from various animals to bring up dirt with an earthworm finally putting dirt on the back of a tortoise, which is where all land comes from. The birds lay eggs and the first humans hatch from those eggs. The birds then had to find a place for the humans to live and tell the god where it was and then carry the people there. It’s only after that point that the part of the story involving “Lita” and the humans making alcohol begins. There is then population growth and evil, the destruction of the world, and living on a large plain and dividing into families again. After that the story becomes much more focused on the migration of the ancestors of the Santal, and how they came to worship Maran buru, which makes the history specific to them rather than something imported from another tribe or civilization. Furthermore, as is outlined on pg. 2 at the above source, the Santal stories were told twice for every member of the community so most would have heard the stories frequently over the course of their lives. This let the community act as a group memory of the past and likely helped stories stay more consistent over time (I would assume). Beyond this consistency, as more people know a story, and it forms some of their identity, I think it would be harder to incorporate the early history of a foreign source into family history (as stated earlier), though this is only my speculation. For another summary of three versions of the Santal’s legends, see pgs. 196-198 here. In that story, the mountain where the couple shelters from the fire-rain is called “Haradata” while in Skrefsrud’s version it is “Harata.” The note from Richardson, Don. Eternity in Their Hearts (p. 39). Baker Publishing Group. Kindle Edition observes that the name “Harata” sounds like “Ararat.” For the location where the Santals live, including Bangladesh, see here.