what is this supposed to mean?!

the first part "this is the tomb of king desius I, "' (then I have no idea after that....)

can someone help me out?

Check these out:
https://www.sylestia.com/forums/?thread=31597
https://www.sylestia.com/forums/?thread=31461

Also, if you have a lvl 60 team, you should be able to defeat Desius easily.

This is the tomb of King Desius I, ruler of Sylestia. In order to seal his spirit in eternal slumber, we constructed this tomb with four magical seals. Each seal locks a piece of his spirit in another plane of existence. If all four seals are broken, king Desius will be free to return to this plance more powerful than ever before. With each seal in place, King Desius will have that pice of his spirit weakened in this plane.
In order, the seals are the Seal of Alacrity, the Seal of Courage, the Seal of Cunnin, and the Seal of Perception. Only those true to each seal will have the power to activate them and only when all four seals are activated will they illuminate.

Then next coded inscription says:
This is the Seal of Alacrity. Only those true to this seal will have the power to activate it. (or something like that)

Then Courage,
Then Cunning,
Then Perception, and finally,

"Beyond this door lies the burial chamber of King Desius Ruler of Sylestia."

These are all the codes I have come upon so far.
:)

I don't know if it's just that I had a greater level (all level 60) But I had no idea what it meant, and still got to King Desius.