He is a pandit (man of knowledge) who speaks what is suitable to the occasion, who renders loving service according to his ability, and who knows the limits of his anger.
For instance, I'm always fascinated to see whether, given the kind of fairly known and established form called popular music, whether there is some magic combination that nobody has hit upon before.
The difficulties we face originate from one of three sources. Some are sent to us by the Lord to test our faith, others are the result of Satan's attacks, and still others are due to our own sinful choices.