In his book, Chuck Bentley writes:

There's a name for God that we seldom ever use. I know I don't use it very often. That name is Jealous. Sounds strange, doesn't it? When we call someone jealous, it’s usually to point out a character flaw. How can something we consider bad be attributed to God, especially one of his names? “Do not worship any other god, for the Lord, whose name is jealous, is a jealous God” (Exodus 34:14).

Back in the late 1960s, there was a popular TV western series called The Guns of Will Sonnet. Walter Brennan played the title role, a Scripture-quoting man with a reputation for unparalleled gun fighting skills. As the series progressed, viewers saw the wise old man avoid more gunfights than he got into the simple, truthful statement about his abilities: “No brag, just fact.”

God has the title of Jealous because he’s the only one worthy of all our affection and adoration. No brag, just fact. The complete worthiness of ultimate praise grants him and him alone the right to be the Jealous One. He’s God Almighty. He’s at the top of all Kings, all Lords, all gods, and all things. So jealousy is normative, if you’re God.

Source: Chuck Bentley, The Root of Riches (FORIAM Publishers, 2011), Pages 68-69