As silver is melted in the furnace, so shall ye be melted in the midst thereof,.... This is repeated for the greater confirmation of it; and the people might assure themselves that it would verily be, as was threatened:
and ye shall know that I the Lord have poured out my fury upon you; feel it upon them; be sensible of it, and acknowledge it; and that it is the Lord's doings, and righteously done; these are they who are meant by the silver, who, though cast into the furnace, were not destroyed, only purified, and made the better and brighter for their afflictions.