'Voice' in the Bible

Wherefore, even as the Holy Spirit saith, To-day if ye shall hear his voice,

while it is said, To-day if ye shall hear his voice, Harden not your hearts, as in the provocation.

he again defineth a certain day, To-day, saying in David so long a time afterward (even as hath been said before), To-day if ye shall hear his voice, Harden not your hearts.

and the sound of a trumpet, and the voice of words; which voice they that heard entreated that no word more should be spoken unto them;

whose voice then shook the earth: but now he hath promised, saying, Yet once more will I make to tremble not the earth only, but also the heaven.