Isaiah 35:5,6 - Coke's Commentary on the Holy Bible

Then the eyes of the blind shall be opened— After a parenthesis in the two preceding verses, the prophet continues his discourse, and more particularly sets forth those privileges of the church which should constitute its dignity and felicity. These privileges undoubtedly are spiritual; and though they may in some measure be applied to the unexpected vicissitude of the deliverance of the Jews from their enemies, yet were they even literally fulfilled in the times of the Messiah, by the miracles which he performed, by the preaching of the Gospel, and by the effusion of his enlightening Spirit. The blind, the deaf, the lame, the dumb, signify persons spiritually so, to whom by God's grace were given, through the Gospel of Christ, eyes to see, and ears to hear, feet to walk, [power to perform] and tongues to speak the things which concern their salvation.