Daniel 3:14

Nebuchadnezzar spake and said unto them, Is it true - Margin, “of purpose;” that is, have you done this intentionally? Wintle renders this, “Is it insultingly?” Jacchiades says that the word is used to denote admiration or wonder, as if the king could not believe that it was possible that they could disregard so plain a command, when disobedience was accompanied with such a threat. De Dieu renders it, “Is it a joke?” That is, can you possibly be serious or in earnest that you disobey so positive a command? Aben Ezra, Theodotion, and Sandias render it as it is in margin, “Have you done this of set purpose and design?” as if the king had regarded it as possible that there had been a misunderstanding, and as if he was not unwilling to find that they could make an apology for their conduct. The Chaldee word (צדא ts^edâ') occurs nowhere else. It is rendered by Gesenius, “purpose, design.” That is, “Is it on purpose?” The corresponding Hebrew word (צדה tsâdâh) means, “to lie in wait, to waylay,” Exodus 21:13; 1 Samuel 24:11, (12). Compare Numbers 35:20, Numbers 35:22. The true meaning seems to be, “Is it your “determined purpose” not to worship my gods? Have you deliberately made up your minds to this, and do you mean to abide by this resolution?” That this is the meaning is apparent from the fact that he immediately proposes to try them on the point, giving them still an opportunity to comply with his command to worship the image if they would, or to show whether they were finally resolved not to do it.

Do not ye serve my gods? - It was one of the charges against them that they did not do it, Daniel 3:12.