Deuteronomy 5:4

5:4 The Lord spoke face to face with you at the mountain, from the middle of the fire.

Deuteronomy 5:23-24

5:23 Then, when you heard the voice from the midst of the darkness while the mountain was ablaze, all your tribal leaders and elders approached me. 5:24 You said, “The Lord our God has shown us his great glory and we have heard him speak from the middle of the fire. It is now clear to us that God can speak to human beings and they can keep on living.