Hi All,
In my 'alternate galaxy' , there are many religions, mostly followed upon species/ethnic lines: converts are welcome upon it is not demanded as part of that particular religions creed. However there are several religions who are outwardly 'evangelist' or proselytizing because their religion demands it, wherein the religion embraces a universalism in that all species, races, gender, ethnicities , cultures fall into the eye of their deity and therefore their particular religion must be followed to be 'saved' or if not are 'damned' in the afterlife. There are 2 of these religions in the galaxy that are sincere - rather than cynical- in this regard and another 2 where such belief is the official stamp of the government , but in reality is a work of fiction in order to keep control of their respective empires.
Humans produced one of these galactic evangelising religions, less than 200 years old and indeed 90% of humans don't actually follow this religion , called Lutonianity, the religion of the 'prophet'- to believers the last holy prophet that will ever appear in the galaxy, with his legacy entrusted to the Office of The Holy Guru, Derek of Luton (he was actually born in a barn in Wellingborough), as written down in the Lutonian Bible, a collection of various books, narrating his sayings, miracles, parables and teachings in an around Luton, Bedfordshire and the home counties of England, the early history of the new religion , liturgy, philosophy and organisational structure of.
That most humans don't follow this religion seems irrelevant to extra terrestrial believers, as it is noted in their holy book 'he came unto his own, but his own received him not and now yours is to decided to use the keys of belief or rejection, to decide for heaven or hell via belief alone '. Yet 2,700 quadrillion people across the galaxy follow this religion, many states have it as their official religion, whether republic or kingdom, with both Luton and Wellingborough being important places of holidays and pilgrimage for devout believers. Given that the Lutonian scriptures are written in 20th and early 21st century English and it is forbidden to translate them into any other language, it is not surprising that this form of English is now such a widely spoken interstellar language. The HQ of this religion isn't based on earth though and its Guru - the successors to prophet Derek - reside in its own state on a Moon of the Tau Ceti System ( 'Whilst his disciples quarrelled during last orders at the pub about who was going to be the first to get the last pint in for the Prophet, who had been debating the revellers and the punters since 12... He said unto Raymond of Walsall [ the First Guru] "you are the Guru upon which I will build my Temple", then he said unto his disciples 'the last pint is the first pint and so shall the first be the last ").