"[W]e have always put a lot of emphasis on the 6th commandment, sexual ethics, and haven’t been nearly as self-scrutinizing in regards to the fifth commandment (that deals with bitterness, judgements, anger, and hatred) or with the 9th and 10th commandments (that have to do with jealousy). It’s not that sexual ethics are unimportant, but our failures here are easier to see and harder to rationalize. The same isn’t true for bitterness, anger, especially righteous anger, nor for jealousy. We can more easily rationalize these and not notice that jealousy is the only sin that God felt it necessary to prohibit in two commandments."  --Ron Rolheiser