New Revised Standard Version
Now, O king, establish the interdict and sign the document, so that it cannot be changed, according to the law of the Medes and the Persians, which cannot be revoked.”

Contemporary English Version
Order this to be written and then sign it, so it cannot be changed, just as no written law of the Medes and Persians can be changed."

New American Bible
Now, O king, let the prohibition be issued over your signature, immutable and irrevocable according to the law of the Medes and Persians.”

Douay-Rheims Bible
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.

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.

establish.

Esther 3:12 And the king's scribes were called in the first month Nisan, on the thirteenth day of the same mouth: and they wrote, as Aman had commanded, to all the king's lieutenants, and to the judges of the provinces, and of divers nations, as every nation could read, and hear according to their different languages, in the name of king Assuerus: and the letters, sealed with his ring,

Esther 8:10 And these letters which were sent in the king's name, were sealed with his ring, and sent by posts: who were to run through all the provinces, to prevent the former letters with new messages.

Isaiah 10:1 Woe to them that make wicked laws: and when they write, write injustice:

according.

Daniel 6:12,15 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. . . .

Esther 1:19 If it please thee, let an edict go out from thy presence, and let it be written according to the law of the Persians and of the Medes, which must not be altered, that Vasthi come in no more to the king, but another, that is better than her, be made queen in her place.

Esther 8:3 And not content with these things, she fell down at the king's feet and wept, and speaking to him besought him, that he would give orders that the malice of Aman the Agagite, and his most wicked devices which he had invented against the Jews, should be of no effect.

altereth not.

Matthew 24:35 Heaven and earth shall pass: but my words shall not pass.