Charles H. Spurgeon on Psalms 68:14

The verb may be viewed as in the second person —Thou, O God! didst make it fair and white as Mount Salmon with snow. The reader may adopt either construction, for the meaning is the same. It is evident that David insists still upon the figure of the whiteness of silver, which he had previously introduced. The country had, as it were, been blackened or sullied by the hostile confusion into which it was thrown, and he says that it had now recovered its fair appearance, and resembled Salmon, which is well known to have been ordinarily covered with snows. Others think that Salmon is not the name of a place, but an appellative, meaning a dark shade. I would retain the commonly received reading. At the same time, I think that there may have been an allusion to the etymology. It comes from the word Mlu, tselem, signifying a shade, and Mount Salmon had been so called on account of its blackness. This makes the comparison more striking; for it intimates that as the snows whitened this black mountain, so the country had resumed its former beauty, and put on an aspect of joy, when God dispelled the darkness which had lain upon it during the oppression of enemies. John Calvin.