'Dumb' in the Bible

They were thoroughly astounded and completely overwhelmed, saying, “He has done everything well! He even makes the deaf hear and the mute speak!”

One of the crowd replied to Him, “Teacher, I brought You my son, possessed with a spirit which makes him unable to speak;

When Jesus saw that a crowd was rapidly gathering [around them], He rebuked the unclean spirit, saying to it, “You deaf and mute spirit, I command you, come out of him and never enter him again!”