John Chrysostom
What is the relationship between these words and the previous ones? It is both profound and immediate. Do not assume, he warns, that these statements are made lightly or are without consequence: His words are untainted, devoid of deceit. Just as refined silver is pure and free from impurities, so too must God's declarations be fulfilled, whatever they may be. This is why it is said, ‘molten silver, tried in the earth.’ An alternative translation (Aquila) states: molten, walking in the earth. The Hebrew text, instead of ‘tested in the earth,’ refers to it as vaalil laares, meaning molten, flowing in the earth. ‘Sevenfold purified.’ Do you perceive how the prophet, through this imagery, conveys the unchangeable and truthful nature of God? Just as silver that has been melted, scorched, and repeatedly refined is liberated from all impurities after thorough purification, so it is with the Divine word.