A Tough Question: Part 1 of many

How can God say killing is a sin, and yet order people to kill or even kill people Himself?

First thought, God stands outside His rules, He makes the rules but doesn't have to follow them. Not totally satisfying, but it's a simple enough answer.

Let's go a bit deeper. Why is killing someone wrong? I'm not sure what the rest of the philosophies or world religions say, and perhaps what I'm about to say is not Biblical, but I want to propose that killing, is in fact, a type of stealing.

Okay, so why is stealing wrong? Well, stealing can be defined as taking what does not belong to you. To argue from a Christian standpoint, the essence of stealing comes from a lack of faith. To take from someone else says that God has not provided enough for you and you need to take more. Stealing for greed, envy, hate is obviously wrong, but what about stealing to feed your kids? Look at it this way, if you steal to feed your kids, it's saying that God will not provide for them and I need to go and do it myself.

In the case of murder, you are taking someone's life or put another way, you are exercising control over it when you have no right to it. This way, one not only steals life from someone, but they are robbing God of His authority over that person's life. God has the authority because He gives life, and so He has the right to take it away. So now murder is a sin, and because God gives life and has the right to take it back because of that, He is exempt from the rule of not murdering because life is His anyway. It's kinda like if a person loans someone 100$. If he takes that 100$ back, no one calls him a thief. This is kinda the same. Probably not a perfect answer, but my musings nonetheless.