And I will bring the blind by a way that they knew not; I will lead them in paths that they have not known: I will make darkness light before them, and crooked things straight. These things will I do unto them, and not forsake them.
The context is God’s judgment, and yet in the midst of it, the prophet reveals the tender mercy of God to redeem those who have saving faith in Him. The “blind” are those who have been deprived of sight by their sin, and the consequent punishment. They will receive their spiritual sight by faith in God who will lead them and never leave them.