John Gills Exposition of the Bible Commentary - Isaiah 40:3
The voice of him that crieth in the wilderness ,.... Not the voice of the Holy Ghost, as Jarchi; but of John the Baptist, as is attested by all the evangelists, Matthew 3:3 and by John himself, John 1:23 , who was a "voice" not like the man's nightingale, "vox et praeterea nihil" a voice and nothing else; he had not only a sonorous, but an instructive teaching voice; he had the voice of a prophet, for he was a prophet: we read of the voices of the prophets, their doctrines and... read more
Matthew Henry's Complete Commentary - Isaiah 40:3-8
The time to favour Zion, yea, the set time, having come, the people of God must be prepared, by repentance and faith, for the favours designed them; and, in order to call them to both these, we have here the voice of one crying in the wilderness, which may be applied to those prophets who were with the captives in their wilderness-state, and who, when they saw the day of their deliverance dawn, called earnestly upon them to prepare for it, and assured them that all the difficulties which stood... read more