Exodus 19:16-18 And it came to pass on the third day in the morning , that there were thunders and lightnings , and a thick cloud upon the mount , and the voice of the trumpet exceeding loud ; so that all the people that was in the camp trembled .

KJV_Strongs⁽ⁱ⁾

16 H7992 And it came to pass on the third H3117 day H1242 in the morning H6963 , that there were thunders H1300 and lightnings H3515 , and a thick H6051 cloud H2022 upon the mount H6963 , and the voice H7782 of the trumpet H3966 exceeding H2389 loud H5971 ; so that all the people H4264 that was in the camp H2729 trembled [H8799] .

17 H4872 And Moses H3318 brought forth [H8686] H5971 the people H4264 out of the camp H7125 to meet [H8800] H430 with God H3320 ; and they stood [H8691] H8482 at the nether H2022 part of the mount.

18 H2022 And mount H5514 Sinai H6225 was altogether on a smoke [H8804] H6440 , because H834 H3068 the LORD H3381 descended [H8804] H784 upon it in fire H6227 : and the smoke H5927 thereof ascended [H8799] H6227 as the smoke H3536 of a furnace H2022 , and the whole mount H2729 quaked [H8799] H3966 greatly.