The words of the Lord are pure words— The words of God, mentioned in the verse before, may certainly be depended on; they are pure truth, without any mixture of dross or deceit: Silver fined in a ground furnace [a furnace or melting-pot in the earth] seven times purified.
Related Commentaries of Psalms 12:6
Psalms 12:6
6 The words of the LORD are pure words: as silver tried in a furnace of earth, purified seven times.