Exodus 19:18-20

YLT(i) 18 and mount Sinai is wholly a smoke from the presence of Jehovah, who hath come down on it in fire, and its smoke goeth up as smoke of the furnace, and the whole mount trembleth exceedingly; 19 and the sound of the trumpet is going on, and very strong; Moses speaketh, and God doth answer him with a voice. 20 And Jehovah cometh down on mount Sinai, unto the top of the mount, and Jehovah calleth for Moses unto the top of the mount, and Moses goeth up.