At this God said to Moses: "I SHALL PROVE TO BE WHAT I SHALL PROVE TO BE." And he added: "This is what you are to say to the sons of Israel, "I SHALL PROVE TO BE has sent me to YOU."

Ex, 3:14; New World Translation, 1984.
(Jehovah's Witnesses)

I like the "becoming" version better; but just fyi... an odd rendering above, eh? One could ponder on "prove" for quite a while, I think; but still, ...a process!

Thanks Rev.