Commentaries:
Carnal joy is temporary because it is based in self-centeredness. By the lifestyles of the average, unconverted person, we can easily see that they live their lives according to the saying, "Ignorance is bliss!" But God tells His people not to rejoice like the world. It is better to have sorrow in humility than joy in pride.
Martin G. Collins
Joy
Zophar connects wickedness with hypocrisy, and then connects both of them with pride. Where does pride appear here? It is in the word excellency—"through their own self-perceived excellency." Many modern translations, seeing what Zophar intended, translate "excellency" as "haughtiness."
The hypocrite is deceived into ignoring realities the meek and humble person might quickly recognize. A deceived person does not know he is deceived, or he would not be deceived. Pride is so powerful that it can deceive quite intelligent people. It is not a matter of intelligence but one of the right kind of knowledge and the willingness to submit to it.
John W. Ritenbaugh
Pride, Humility, and Fasting