'Jealous God' in the Bible

For Jehovah thy God is a devouring fire, a jealous God.

thou shalt not bow down thyself unto them, nor serve them; for I, Jehovah, thy God, am a jealous God, visiting the iniquity of the fathers upon the children, and upon the third and upon the fourth generation of them that hate me;

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