28. Revolters. The has “ones unwilling to hear,” that is, disobedient ones.
Brass and iron. These are of themselves not valueless metals, but should they be discovered by an assayer who was expecting to find gold or silver, he would be greatly disappointed. God as the great Assayer was keenly disappointed in His people. They completely missed attaining to the high destiny He had in mind for them, and yet they considered themselves better than the heathen.