Here is a volume from the famous (well, among specialists) south Arabian expedition of the late 19th c. which resulted in several language and folklore studies.

This volume contains Mehri and Soqotri texts with German and sometimes Arabic translations as well, so it's often quadrilingual, which is really delightful.

I have other volumes from this series, but unfortunately not the one which specifically focuses on Soqotri texts (that would be volume VI) and I would very much appreciate if someone posted that one.

Don't blame me for the Biblical texts at the start of the book, I'm not a missionary for any religion.