Anger is cruel and fury overwhelming,
but who can stand before jealousy?
The wisdom of the Proverbs is sometimes amazingly simple. Sometimes, so much so that I find it hard to add any commentary to a verse, lest I mess it up in some way. This is one of those verses.
A word about jealousy though: Jealousy is many times looked at in such a negative light, but it isn't always a negative emotion. The Bible even says that God is a jealous God. He is jealous for our time and energy. He doesn't want us to be with another, kind of like a husband is jealous for his wife.
And true jealousy, who can stand before it? Unlike cruelty or fury, it stands justified and pure in its teeming energy. Don't get in its way, it will surely get what belongs to it.