I did a quick search for devotional works on the subject of Envy and found this great 2 parter by Chuck Swindoll, check out the short excerpts and the original posts by Chuck by clicking on part one and two below:
What exactly is envy? How does it differ from its twin, jealousy? Envy (the more sophisticated of the two) is a painful and resentful awareness of an advantage enjoyed by another . . . accompanied by a strong desire to possess the same advantage. Envy wants to have what someone else possesses. Jealousy wants to possess what it already has. Jealousy is coarse and cruel. Envy is sneaky and subtle. Jealousy clutches and smothers. Envy is forever reaching, longing, squinting, thinking (and saying) sinister insinuations.
God’s Word strongly admonishes us against envy; fortunately, it also tells us how to tame the monster within. We’ll talk about that tomorrow.
And speaking of hell, no one has done a better job of portraying envy than Dante. In his Purgatory, you may recall, the envious sit like blind beggars by a wall. Their eyelids are sewed shut. The symbolism is apt, showing the reader that it is one of the blindest sins—partly because it is unreasonable, partly because the envious person is sewed up in himself. Swollen with poisonous thoughts. In a dark, constricting world of almost unendurable self-imposed anguish.