Daniel 6:15

Then these men assembled unto the king, and said unto the king. Know, O king, that the law of the Medes and Persians is, That no decree or statute which the king establisheth maybe changed. The corresponding verse in the Septuagint is much shorter, "And he was not able to deliver him from them." This verse in the Massoretic text has very much the appearance of a doublet mollified to fit a new position. The first clause has occurred already twice before in the sixth verse and the fifteenth. The last portion of the verse is a modification of what is stated in Daniel 6:9 and Daniel 6:13 . The first clause is omitted by Theodotion, but inserted by the Peshitta. The probability is that this verse, in its Massoretic form, has been inserted to explain the opposition the king strove in vain to overcome.