Deuteronomy 6:13-15

13Thou shalt fear Jehovah thy 1God, and serve him, and shalt swear by his name.

14Ye shall not go after other 2gods, of the 3gods of the peoples that are round about you;

15for Jehovah thy 4God is a jealous 5God in thy midst; lest the anger of Jehovah thy 6God be kindled against thee, and he destroy thee from the face of the earth.