NET
28 I reported, “All of them are the most stubborn of rebels! They are as hard as bronze or iron. They go about telling lies. They all deal corruptly.
Darby
28 They are all the most rebellious of rebels, going about with slander: they are bronze and iron; they are all corrupters.
KJV
28 They [are] all grievous revolters, walking with slanders: [they are] brass and iron; they [are] all corrupters.