Warren Wiersbe, "Preaching must be marked by three elements: conviction, warning, and appeal ("reprove, rebuke, exhort").
To quote an old rule of preachers, "He should afflict the comfortable and comfort the afflicted."
If there is conviction but no remedy, we add to people’s burdens. And if we encourage those who ought to be rebuked, we are assisting them to sin. Biblical preaching must be balanced" (The Bible Exposition Commentary).