I agree that wishing for the death of this child is too harsh a punishment just for stealing, but please keep in mind that this could have turned into something much worse. He could have severely hurt or killed someone during this robbery.
A true child of God wouldn't steal because that's against God's law. He broke both God's and man's law. This is a child of the devil. Pray for him, but don't excuse him.
God gave us laws to live by, and instructed us to live by the laws of the land. Why would God instruct us to follow the laws of the land, and then have no consequences when those laws are broken? This robber broke the law, and he's going to have to pay the price for that.
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