It is very difficult to give a 15 second sound bite on why there is pain and suffering in this world and not have it come off as being flippant or surface level or superficial.

Moral evil is the immorality and pain and suffering and tragedy that come because we choose to be selfish, arrogant, uncaring, hateful and abusive.

So much of the world's suffering results from the sinful action or inaction of ourselves and others. For example, people look at a famine and wonder where God is, but the world produces enough food for each person to have 3,000 calories a day. It's our own irresponsibility and self-centeredness that prevents people from getting fed.

Christians can have doubts and they can have questions, and the unhealthy way to deal with that is to keep them inside where they fester and grow and can undermine our faith. The healthy way to deal with it is to talk about it and be honest about it.