This quote was found in yesterday's "Verse and Voice" feature from Sojourners
"Christians who remember their Lord was unjustly and cruelly given the death penalty have a hard time being enthusiastic about imposing the death penalty on others."This is one argument against the death penalty. The United Methodist Church emphasizes another:Glen Stassen
"We believe the death penalty denies the power of Christ to redeem, restore and transform all human beings. The United Methodist Church is deeply concerned about crime throughout the world and the value of any life taken by a murder or homicide. We believe all human life is sacred and created by God and therefore, we must see all human life as significant and valuable. When governments implement the death penalty (capital punishment), then the life of the convicted person is devalued and all possibility of change in that person's life ends. We believe in the resurrection of Jesus Christ and that the possibility of reconciliation with Christ comes through repentance. This gift of reconciliation is offered to all individuals without exception and gives all life new dignity and sacredness. For this reason, we oppose the death penalty (capital punishment) and urge its elimination from all criminal codes."The Book of Discipline of the United Methodist Church
There are, of course, many others.