The bible characterizes God as being a God of jealousy. However, there is a distinct difference between earthly jealousy and Godly jealousy. God is a jealous God, but is jealous for our sake, not his own sake. He wants us to worship him because he knows that is the only way to our salvation. Humans, however, are jealous to please their own selfishness. The whole concept to this is to keep in mind that there is a such thing as a "Godly Jealousy" that we should all devote our lives to. For example, as devoted Christians, it is important to pass on the word of God to others, and through doing that, we want others to notice a difference in us; a difference that persuades others to want what we have.