First and foremost, pray. Pray for the families. Pray for the people of the school. Pray for the community. Pray for the nation.
Secondly, grieve. Grieve for the families. Grieve for the people of the school Grieve for the community. Grieve for the nation.
Thirdly, meditate. Consider the wickedness of man's heart. How evil it can be and what evil it can do! But as you meditate, remember also, "hurting people hurt people." I don't know the motivation of the young man's heart, nor will we ever be able to understand all that went through his mind. No doubt the man's heart was angry, hurt, and broken. There are many people all around us who can be described in the same way.
Fourthly, repent. In Luke 13:1-5 Jesus gives a glimpse of how we should respond to such tragedies, repent. "Unless you repent, you too will all perish." We need to repent as individuals and as a nation. We need to turn from our sin and turn to God. Our nation over the years has glorified such violence in movies and computer games. Violence entertains us. In fact, if some of you are truly honest with yourselves, you are watching hours of news coverage of this event as a form of entertainment. I would probably argue that most news stations have turned their shows into entertainment. But, if we as a nation glorify violence, how can we not expect it to occur? I am sure, also, there were all different types of sin within the person and the situation than just the violent act; this is also true of our nation. Thus, there is much for which we need to repent.
Fifthly, ask ourselves, "is there something we can do to prevent such violence?" Some people have already begun chanting for more gun control, and that might be a possibility. Obviously, gun control is not the only issue, for the 20 elementary students in China were just stabbed by one person. That did not involve a gun. Also, the gun did not kill the people, a person did. But we need to begin to ask the right questions in order to get the right answers and the right results. If we are satisfied with gun control but do not nothing about our nation's glorification of violence, we will miss the point. If we don't ever deal with the causes that lead to hurt and broken people, we will never stop the violence. And obviously, from my point of view, if we don't offer people the opportunity to know Jesus Christ, the Prince of Peace, people's hearts will never be healed and changed.
So much more has been said and will be said, but here are some brief thoughts to help you think through this tragedy in a more spiritual way than you will hear on the news. Feel free to respond or ask questions.
Peace be with you!