Exodus 34:14

14 Do not worship any other god, for the LORD, whose name is Jealous, is a jealous God.

Read Exodus 34:14 Using Other Translations

For thou shalt worship no other god: for the LORD, whose name is Jealous, is a jealous God:
(for you shall worship no other god, for the LORD, whose name is Jealous, is a jealous God),
You must worship no other gods, for the LORD, whose very name is Jealous, is a God who is jealous about his relationship with you.