The Messiah would heal the dumb.
OT Prophecy NT Fulfillment
Isaiah 35:6b
[6] Then shall the lame man leap as an hart, and the tongue of the dumb sing: for in the wilderness shall waters break out, and streams in the desert.
Matthew 9:32–33
[32] As they went out, behold, they brought to him a dumb man possessed with a devil.
[33] And when the devil was cast out, the dumb spake: and the multitudes marvelled, saying, It was never so seen in Israel.

Matthew 15:30
And great multitudes came unto him, having with them those that were lame, blind, dumb, maimed, and many others, and cast them down at Jesus’ feet; and he healed them.
Tanakh – Neviim – Isaiah 35:6b
[35:6] Then shall the lame man leap as a hart, and the tongue of the dumb shall sing; for in the wilderness shall waters break out, and streams in the desert.
Hebrew OT – Isaiah 35:6b
[35:6] אָז יְדַלֵּג כָּאַיָּל פִּסֵּחַ
וְתָרֹן לְשׁוֹן אִלֵּם
כִּי נִבְקְעוּ בַּמִּדְבָּר מַיִם
וּנְחָלִים בָּעֲרָבָה