'st hieroglyphic

http://en.wikipedia.org/wiki/Isis wrote:
The true Egyptian pronunciation remains uncertain, however, because hieroglyphs do not indicate vowels.

http://portugalparanormal.com/index.php/topic,19690.msg179147.html#msg179147 wrote:
It is important to note that 'st simply refers to how the word for the name of Isis was represented in hieroglyphics, as it is known that do not include vowels and as such impossible to be voiced without additional knowledge, knowledge that this is largely lost. There are scholars who believe that the absence of phonetic Egyptian legacy is also a form of protection in a society highly connected with magic, the occult and the power of the word, thus ensuring the secrecy of various mantras and words taken as a power in ancient beliefs . With this in mind, it is quite possible that the 'st hieroglyphic for Isis was actually pronounced as Aset at the time of the ancient empire. Of course, it is impossible to prove it, but it is certainly possible to have an open and a reason to explain the use of the word orders by Aset Aset Ka like.

Kaia wrote:Hiding the vowels as a way to secure the language, stopping the wrong people from decoding the language...and just passing on the real knowledge to a certain few...it does seem like the right thing to do! Especially to keep the real names of Pharaohs and gods safe.

But as it's referred to later in that topic, the Ancient Greeks would know how to pronounce the words, as they lived in Egypt and most likely learned their language, right?