Write ye also for the Jews, as it liketh you, in the king's name, and seal [it] with the king's ring: for the writing which is written in the king's name, and sealed with the king's ring, may no man reverse. (8:8)

--Daniel--

Now, O king, establish the decree, and sign the writing, that it be not changed, according to the law of the Medes and Persians, which altereth not. (6:8)

Wherefore king Darius signed the writing and the decree. (6:9)

Now when Daniel knew that the writing was signed, he went into his house; and his windows being open in his chamber toward Jerusalem, he kneeled upon his knees three times a day, and prayed, and gave thanks before his God, as he did aforetime. (6:10)

Then these men assembled, and found Daniel praying and making supplication before his God. (6:11)

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. (6:12)