It is always right to do right, but it is more perfectly right to do right for the right reasons. In other words, serve the Lord, but do so out of a pure motive.
Many who understand the wickedness involved in murder fail to realize that the scripture also warns “Whosoever hateth his brother is a murderer.”
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.
