There are two categories of sin: sins against God and sins against man. By default, every sin is against God. Yet, not all sin is against man.
Many people use time set aside for rest to do things that deprive of rest. This compounds the need for rest and the problems associated with not getting any.
At times, God called people to enter into war with the goal of killing their enemies. The Bible clearly distinguishes between this type of killing and murder.
