What does the Bible say about the deaf hearing and the blind seeing?

In Isaiah 29:18-19, it is written that the deaf shall hear and the blind shall see out of obscurity and darkness. This passage signifies not just a physical healing but a profound spiritual awakening that occurs when God interacts with His people. The deaf represent those who do not perceive spiritual truth, while the blind speak to those who cannot discern God's revelation. When the Lord opens one’s ears and eyes, they begin to hear His Word and understand His salvation, highlighting the miraculous nature of God's grace in overcoming spiritual blindness and deafness.