Eru in the past, present and future

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.