So how does God decide who is a murderer?

When God weights acts of murder, He doesn't go easy on those who kill very young and very little babies. He doesn't decree an intermediate condemnation for those who murder these very little ones not yet attached to their mother's womb because they only have "intermediate moral value."

The murder of the very young or very old is not more or less evil based upon the pain others do or do not suffer at his loss. Man is not the measure of all things.

God is. And what has God decreed concerning murder?