This used to be my written opinion on the death penalty:
God supports the death penalty. Not just because He prescribed it as punishment in the Old Testament, but because that is how He chose to have His Son Jesus, die for us. Jesus did not die in an accident, nor was he murdered, die of natural causes or disease. God did not waive the penalty.
In the Old Testament, God prescribed the death penalty to pay for sin. Bulls and lambs were sacrificed for the sin of the people. To pay for our sin, Jesus was executed. To me this affirms God’s support for it.
I still have the same opinion yet... I have been wondering about what happens when there was a wrong death penalty decision in the Bible.
New International Version (NIV)
A Rebellious Son18 If someone has a stubborn and rebellious son who does not obey his father and mother and will not listen to them when they discipline him, 19 his father and mother shall take hold of him and bring him to the elders at the gate of his town. 20 They shall say to the elders, “This son of ours is stubborn and rebellious. He will not obey us. He is a glutton and a drunkard.” 21 Then all the men of his town are to stone him to death. You must purge the evil from among you. All Israel will hear of it and be afraid.
What if the parents were wrong? There is no indication of a fair trial, nor do we see instructions for a fair trial.