Deuteronomy 4:33-35

33Did ever people hear the voice of God speaking out of the midst of the fire, as thou hast heard, and live?

34Or hath God assayed to go and take him a nation from the midst of another nation, by temptations, by signs, and by wonders, and by war, and by a mighty hand, and by a stretched out arm, and by great terrors, according to all that Yhwh your God did for you in Egypt before your eyes?

35Unto thee it was shewed, that thou mightest know that Yhwh he is God; there is none else beside him.