Your gold and silver are corroded. Their corrosion will testify against you and consume your flesh like fire. You have hoarded treasure in the last days.
KJV
Your gold and silver is cankered; and the rust of them shall be a witness against you, and shall eat your flesh as it were fire. Ye have heaped treasure together for the last days.
ASV
Your gold and your silver are rusted; and their rust shall be for a testimony against you, and shall eat your flesh as fire. Ye have laid up your treasure in the last days.