Deuteronomy 4:33

4:33 Have a people ever heard the voice of God speaking from the middle of fire, as you yourselves have, and lived to tell about it?

Deuteronomy 6:14

6:14 You must not go after other gods, those of the surrounding peoples,

Deuteronomy 11:16

Exhortation to Instruction and Obedience

11:16 Make sure you do not turn away to serve and worship other gods!