That's an excellent question Nessa. I think that God can help us discern whether a not a person is really in need of help. For the record Jon the bible teaches that all types of emotions flows out of the human heart. Thankfully as mature Christians we are able to speak life into situations that are lifeless. People who are devoid of understanding can be easily depressed. Fred Hammond(one of my heroes) battled depression. On the outside looking in I couldn't understand how a man who penned the songs that he wrote could ever be depressed.
It can happen to the best of us.