en_tn/jer/06/28.md

who go about slandering others

"and constantly slander other people"

All of them are bronze and iron

Bronze and iron are hard metals. Yahweh speaks of the people being stubborn as if they were hard like bronze and iron. Alternate translation: "All of them are hard like bronze and iron" or "All of them are stubborn, as hard as bronze and iron" (See: rc://en/ta/man/translate/figs-metaphor)