Verse linking is really important, as is the ability to link ranges of verses.
Ideally, [[1 Tim 3:15-16]] would just work. But it may be better to use [[1 Tim 3#15-16|1 Tim 3:15-16]] so that someone without the (TBD) verse-linking plugin would at least land in the correct file.
: is not a valid character for filenames on macOS, because it conflicts with UNIX. There are certain characters that conflict with file-names on Windows as well.