Daniel 3:30 - Joseph Benson’s Commentary on the Old and New Testaments

Then the king promoted Shadrach, &c. He not only reversed the attainder of these three men, but restored them to their places in the government, nay, and preferred them to greater and more advantageous trusts than they had held before; or, as the margin reads it, He made them to prosper. The LXX., add at the end of the verse, And he advanced them to be governors over all the Jews who were in his kingdom. Their promotion, which was much to their own honour, would be still more to the comfort of their brethren in captivity in those parts.