Fear of anything different is what has made human beings kill each other. If it's different, kill it! This is why people of different religions say that the different religions are dangerous, evil, and are "not the right way." The Inquisitions, The Crusades, European wars of Roman Catholics and Protestants are examples of tribal gods clashing with each other.
I remember when I was a little boy growing up in a southern town that Roman Catholics were forbidden from going into Protestant churches and Protestants were forbidden from going into Roman Catholic churches! And then the-no-longer-so-recently Christian preacher takes copies of the Qur'an and burns them in Florida. The on-going death threats regarding the writing of the book, The Satanic Verses.
I think that the end of the world coming via "fire" as mentioned in the Bible will be because human beings aren't able to get over their fears of differences and unknowns, their refusal to learn about others who are not from their particular tribe. I think that the peoples of the world had better get over their fears, abolishing the dualistic, tribal religious systems, cultural systems, and political systems. We'd better get used to and embrace non-dual, universal religious systems, cultural systemss, and political systems.
"There is no fear in love, but perfect love drives out fear. . . . The one who fears has not been perfected in love. . . .If someone says, “I love God,” and yet he hates his brother or sister, he is a liar; for the one who does not love his brother and sister whom he has seen, cannot love God, whom he has not seen." Quoted from Saint John's First Epistle, chapter 4, verses 18 & 20.