Berean Study Bible
Therefore, O king, establish the decree and sign the document so that it cannot be changed—in accordance with the law of the Medes and Persians, which cannot be repealed.”

King James Bible
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.

American Standard Version
Now, O king, establish the interdict, and sign the writing, that it be not changed, according to the law of the Medes and Persians, which altereth not.

Darby Bible Translation
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 may not be revoked.

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.

English Revised Version
Now, O king, establish the interdict, and sign the writing, that it be not changed, according to the law of the Medes and Persians, which altereth not.

Young's Literal Translation
Now, O king, thou dost establish the interdict, and sign the writing, that it is not to be changed, as a law of Media and Persia, that doth not pass away.'