For thou, O God, hast proved us,.... And by the experiment found them to be true and faithful; to have the truth of grace, and the root of the matter in them; not reprobate silver, or their grace counterfeit grace; but of the right kind, solid and substantial;thou hast tried us as silver is tried; in a furnace, where it is put and melted by the refiner, and purified from the dross that attends it.
So the Targum,"thou hast purified us as the silversmith purifieth the silver;''or tries it by melting and purifying it. Thus the Lord puts his people into the furnace of afflictions, and sits as a refiner and purifier of them; hereby he tries their graces, faith, patience, hope, and love, their principles and their professions; refines their graces, and makes them more bright and illustrious; removes their dross and tin, and reforms their manners; and proves them to be good silver, and approves of them, and esteems them as such, even as his peculiar treasure.