u/Kakaka-sir

As I was reading about how names change in Esperanto I read that the Esperanto form of the name Daniel is Danielo, there's even a wikipedia article about it. Yet I went to check the Esperanto London Bible and in every instance Daniel is just Daniel, not Danielo. So where does Danielo come from? Is it correct to use Daniel still? And if Danielo is the proper Esperanto form, why does the bible use Daniel?