Exodus 19:16-19 It happened on the third day, when it was morning, that there were thunders and lightnings, and a thick cloud on the mountain, and the sound of an exceedingly loud trumpet; and all the people who were in the camp trembled.

WEB_Strongs⁽ⁱ⁾

16 H7992 It happened on the third H3117 day, H1242 when it was morning, H6963 that there were thunders H1300 and lightnings, H3515 and a thick H6051 cloud H2022 on the mountain, H6963 and the sound H3966 of an exceedingly H2389 loud H7782 trumpet; H5971 and all the people H4264 who were in the camp H2729 trembled.

17 H4872 Moses H5971 led the people H3318 out H4264 of the camp H7125 to meet H430 God; H3320 and they stood H8482 at the lower H2022 part of the mountain.

18 H2022 Mount H5514 Sinai, H6225 all it, smoked, H6440 because H3068 Yahweh H3381 descended H784 on it in fire; H6227 and its smoke H5927 ascended H6227 like the smoke H3536 of a furnace, H2022 and the whole mountain H2729 quaked H3966 greatly.

19 H6963 When the sound H7782 of the trumpet H6963 grew H1980 louder H3966 and H2390 louder, H4872 Moses H1696 spoke, H430 and God H6030 answered H6963 him by a voice.