Deuteronomy 4:12
4:12 Then the Lord spoke to you from the middle of the fire; you heard speech but you could not see anything – only a voice was heard.
Deuteronomy 4:36
4:36 From heaven he spoke to you in order to teach you, and on earth he showed you his great fire from which you also heard his words.
John 12:29-30
12:29 The crowd that stood there and heard the voice said that it had thundered. Others said that an angel had spoken to him.
12:30 Jesus said, “This voice has not come for my benefit but for yours.