Kosta,
There is a part your missing. There is no prohibition against killing *anywhere* in the bible but there is one against murder. God being holy and man being by nature sinful from conception means God has the absolute right to kill us, even here as I sit. Man does not...
God is Life. He gives life. Those who parish do so not because God kills them but because they do what God is not. God came on earth to save us, not to destroy us. But that becomes obvious in the Gospels, not in the OT.