Charles H. Spurgeon on Psalms 119:119

Dross. 1. The dross obscures the lustre and glory of the metal, yea, covers it up, so that it appears not; rust and filth compass and hide the gold, so that neither the nature nor lustre of it can be seen. 2. Dross is a deceiving thing. It is like metal, but is not metal; the dross of silver is like it, and so the dross of gold is like gold, but the dross is neither silver nor gold. 3. Dross is not bettered by the fire: put it into the fire time after time, it abides so still. 4. Dross is a worthless thing. It is of no value base, vile, contemptible. 5. It is useless, and to be rejected. 6. Dross is an offensive thing: rust eats into the metal, endangers it, and makes the goldsmith to kindle the fire, to separate it from the gold and silver. Condensed from William Greenhill.