They shall feed and lie down, and none shall make them afraid. (Zephaniah 3:13)
Yesterday we thought of the afflicted and poor people whom the Lord left to be a living seed in a dead world. The prophet says of such that they shall not work iniquity nor speak lies. So that while they had neither rank nor riches to guard them, they were also quite unable to use those weapons in which the wicked place so much reliance: they could neither defend themselves by sin nor by subtlety.
What then? Would they be destroyed? By no means! They should both feed and rest and be not merely free from danger but even quiet from fear of evil. Sheep are very feeble creatures, and wolves are terrible enemies; yet at this hour sheep are more numerous than wolves, and the cause of the sheep is always winning, while the cause of the wolves is always declining. One day flocks of sheep will cover the plains, and not a wolf will be left. The fact is that sheep have a Shepherd, and this gives them provender, protection, and peace. “None” — which means not one, whether in human or diabolical form — “shall make them afraid.” Who shall terrify the Lord’s Rock when He is near? We lie down in green pastures, for Jesus Himself is food and rest to our souls.
Source : http://www.sermonindex.net/modules/articles/index.php?view=article&aid=1312