What does Daniel 6:12 mean?

Then they came near, and spake before the king concerning the king’s interdict: Hast thou not signed an interdict, that every man that shall make petition unto any god or man within thirty days, save unto thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which altereth not.

Then they came near, and spake before the king concerning the king’s decree; Hast thou not signed a decree, that every man that shall ask a petition of any God or man within thirty days, save of thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which altereth not.

Then they came near, and spake before the king concerning the king’s interdict: Hast thou not signed an interdict, that every man that shall make petition unto any god or man within thirty days, save unto thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which altereth not.

Then they came near before the king and said, O King, have you not put your name to an order that any man who makes a request to any god or man but you, O King, for thirty days, is to be put into the lions' hole? The king made answer and said, The thing is fixed by the law of the Medes and Persians which may not come to an end.

then they have come near, yea, they are saying before the king concerning the king's interdict: `Hast thou not signed an interdict, that any man who seeketh from any god and man until thirty days, save of thee, O king, is cast into a den of lions?' Answered hath the king, and said, `The thing <FI>is<Fi> certain as a law of Media and Persia, that doth not pass away.'

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.

Then they came near, and spoke before the king concerning the king's decree: Hast thou not signed a decree, that every man that shall ask [anything] of anygod or man within thirty days, except of thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which may not be revoked.