Bible Verses About Persia: Government of, restricted by constitutional limitations

Write ye therefore to the Jews, as it pleaseth you in the king's name, and seal the letters with my ring. For this was the custom, that no man durst gainsay the letters which were sent in the king's name, and were sealed with his ring.

Now, therefore, O king, confirm the sentence, and sign the decree: that what is decreed by the Medes and Persians may not be altered, nor any man be allowed to transgress it.

So king Darius set forth the decree, and established it.

Now, when Daniel knew this, that is to say, that the law was made, he went into his house: and opening the windows in his upper chamber towards Jerusalem, he knelt down three times a day, and adored and gave thanks before his God, as he had been accustomed to do before.

Wherefore those men carefully watching him, found Daniel praying and making supplication to his God.

And they came and spoke to the king concerning the edict: O king, hast thou not decreed, that every man that should make a request to any of the gods, or men, for thirty days, but to thyself, O king, should be cast into the den of the lions? And the king answered them, saying: The word is true, according to the decree of the Medes and Persians, which it is not lawful to violate.