Silver
From:
A Dictionary of Biblical Words and Phrases
By:
Alfred Taylor Schofield
is typical of redemption, being the redemption money of the Israelites. The words of the Lord, the tongue of the just, saints in affliction, are all compared to silver (Psa. 12:6; Prov. 10:20; Isa. 1:22; Psa. 66:10).