Luke 13:4-5 (HCSB)

Or those 18 that the tower in Siloam fell on and killed — do you think they were more sinful than all the people who live in Jerusalem? No, I tell you; but unless you repent, you will all perish as well!”

     In Jesus’ view, death—wherever we find it and however it comes—was an object lesson in the importance of being prepared for eternity.
     Eighteen people had been killed by the collapse of the tower in Siloam.  Were they being punished for their sins?  No.  They were liable to all of the accidents, disease, and suffering that everyone else is exposed to in this world.  Let the observer be prepared.