Exodus: Names of God

Today in my reading I came across another name of God which struck me as odd. I do not recall it, but it was there. In Chapter 34 God refers to God as Jealous. "I am Jealous", as in Jealous is God's name. In the context of Exodus and the laws regarding the worship of God, it makes sense, but it is not a name I readily think of when I think of God.