Charles Ellicott Commentary Proverbs 25:13

"As the cold of snow in the time of harvest, [So is] a faithful messenger to them that send him; For he refresheth the soul of his masters." — Proverbs 25:13 (ASV)

As the cold of snow in the time of harvest. —Not a snowstorm, as this would be a calamity (Proverbs 26:1), but snow employed to cool drinks in the summer heats. The use of this was probably familiar to Solomon in his summer palace at Lebanon (1 Kings 9:19). The peasants of Lebanon are now said to store up snow in the clefts of the mountain, and convey it in summer to Damascus and the coastal towns. For the opposite picture of the unfaithful messenger, compare Proverbs 10:26.