Proverbi 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.

Ver. 13. As the cold of snow in the time of harvest.] Harvest men, of all men, bear the heat of the day, being far from shade or shelter, far from springs of water, parched and scorched with heat and drought, in those hotter countries especially. Now, as the cold of snow or ice, which in those countries they kept under ground all the year about to mix with their wines, would be most welcome to such, so is a trusty and speedy messenger; for by his good news he greatly reviveth the longing and languishing minds of those that sent him, who, during the time of his absence, through fear and doubt, were almost half dead.

This is much more true of God's faithful messengers, Job 33:23 whose very "feet are" therefore "beautiful," and message most comfortable to those that labour and languish under the sense of sin and fear of wrath.