Deuteronomy 4:33-35

33Has a people ever heard the voice of God speaking from the midst of the fire, as you have heard—and lived?

34Or has any god ever tried to come to take for himself a nation from within a nation—by trials, by signs and wonders, and by war, and by a mighty hand and an outstretched arm, and by great terrors—like all that Adonai your God did for you in Egypt before your eyes?

35You were shown, so that you might know that Adonai is God—there is no other besides Him.