Reach the Deaf

The hymn “O For a Thousand Tongues to Sing” contains this verse:

Hear Him, ye deaf; His praise, ye dumb,
Your loosened tongues employ;
Ye blind, behold your Savior come,
And leap, ye lame, for joy.

Charles Wesley, the author of the hymn, may have had this passage in the Bible in mind when he wrote it.

Then the eyes of the blind shall be opened,
and the ears of the deaf unstopped;
then shall the lame man leap like a deer,
and the tongue of the mute sing for joy.
Isaiah 35:5-6

This describes what will happen when Jesus Christ begins his reign on earth.  All of the physical defects we now suffer from will be eliminated.  There will be no deaf people; everyone will have perfect hearing.