Psalms 12:6

The words of the Lord are pure Without the least mixture of falsehood, and therefore shall be infallibly fulfilled. Men often speak rashly, and promise what they cannot perform, and deceitfully, what they never intend to perform. But God's words are different; they are pure from all manner of dross; from all folly, or fraud, or uncertainty. “Often have they been put to the test, in the trials of the faithful, like silver committed to the furnace in an earthen crucible; but, like silver in its most refined and exalted purity, found to contain no dross. The words of Jehovah are holy in his precepts, just in his laws, gracious in his promises, significant in his institutions, true in his narrations, and infallible in his predictions. What are thousands of gold and silver, compared to the treasures of the sacred page?” Horne.