An interesting sentence using words to express time. Tolkien did not provide a translation.
The sentence seems to mean:
Eru (was) before, (is) now, will be (after).
Black Speech, Nandorin, Noldorin, Quendya, Quenya, Sindarin, Telerin are languages conceived by Tolkien and they do not belong to us; we neither can nor do claim affiliation
with Middle-earth Enterprises nor Tolkien Estate.