Deuteronomy 6:13-16

Jehovah thy God thou dost fear, and Him thou dost serve, and by His name thou dost swear;

ye do not go after other gods, of the gods of the peoples who are round about you;

for a zealous God is Jehovah thy God in thy midst--lest the anger of Jehovah thy God burn against thee, and He hath destroyed thee from off the face of the ground.