By Kerby Anderson.
Two obvious problems. First, Anderson thinks that because the Old Testament law teaches that the penalty for murder ought to be death, that this is part of God's moral law (as opposed to the ceremonial law) and should be carried forward into modern society. However, there are lots of other stoning offenses in the Bible (adultery, homosexual activity, and my favorite, disrespecting your parents). I don't see Anderson saying that the penalty for these offenses should be carried forward into modern society.
Second, Jesus stopped an execution. Should we accept Jesus' criterion for who should participate in an execution? If so, we can have the death penalty on the books but are going to be hard pressed to find anyone to perform the executions, since the last sinless person who walked the earth ascended into heaven nearly two milennia ago.