Exodus 34:14 "(for you shall worship no other god, for the LORD, whose name is Jealous, is a jealous God.)"
Jealous: from the Hebrew word "qana" meaning "zealous or jealous" (Strong's Exhaustive Concordance).
This is one of those instances where it is important to understand the original meaning of the word in order to fully comprehend its context. I've heard some people (including a famous talk show host) say that verses like this mean God is jealous of us. Really? I sincerely want to ask "Why? Why would our Creator be jealous of us?"
The answer is He is not jealous of us, but rather for us. He loves us so much that He wants to be number one in our heart just as we are in His. He loves us so much, He sent His Son to die for us.
I find it interesting that the Hebrew word also connotates "zealous." According to Dictionary.com, zealous means "ardently active, devoted." Synonyms include enthusiastic, eager, and passionate. God is passionate for us. He is devoted to us. Of everything I know about the LORD (and trust me, I have plenty to learn still), this explanation of His jealousy is in tune with who He is.
This is just an example of why it is important to learn the original context of scripture before dismissing it. More people would live in truth and know who God truly is instead of a misconception.