'Speech' in the Bible

For Jerusalem has stumbled and Judah has fallen,Because their speech and their actions are against the Lord,To rebel against His glorious presence.

Then you will be brought low;From the earth you will speak,And from the dust where you are prostrateYour words will come.Your voice will also be like that of a spirit from the ground,And your speech will whisper from the dust.

You will no longer see a fierce people,A people of unintelligible speech which no one comprehends,Of a stammering tongue which no one understands.