Deuteronomy 4:34-36 Catholic Public Domain Version (CPDV)

34. whether God has acted so as to enter and take for himself a nation from the midst of the nations, by means of tests, signs, and wonders, by means of fighting, and a strong hand, and an outstretched arm, and terrible visions, in accord with all the things which the Lord your God has accomplished for you in Egypt, in the sight of your eyes.

35. So may you know that the Lord himself is God, and there is no other beside him.

36. He has caused you to hear his voice from heaven, so that he might teach you. And he showed you his exceedingly great fire on earth, and you heard his words from the midst of the fire.

Deuteronomy 4