John Gills Exposition of the Bible Commentary - Isaiah 51:20
Thy sons have fainted ,.... Through want of food, or at the desolation made, and have no spirit in them to appear in the interest of true religion: they lie at the head of all the streets ; emaciated by famine, and not able to walk, but drop down in the streets, and there lie panting and pining away; or slain by the enemy; or with the famine, and the sword, as Aben Ezra, and none to bury them; so the dead bodies of the witnesses shall lie in the street of the great city unburied, ... read more
Matthew Henry's Complete Commentary - Isaiah 51:17-23
God, having awoke for the comfort of his people, here calls upon them to awake, as afterwards, Isa. 52:1. It is a call to awake not so much out of the sleep of sin (though that also is necessary in order to their being ready for deliverance) as out of the stupor of despair. When the inhabitants of Jerusalem were in captivity they, as well as those who remained upon the spot, were so overwhelmed with the sense of their troubles that they had no heart or spirit to mind any thing that tended to... read more