Do unto others as you would have them do to you.
Go the extra mile
Turn the other cheek
Be ye kind one to another
Let him without sin cast the first stone
Show me where Christ says it is all right to have a flawed system whereby an innocent person may be executed.
You did not answer my question. Do you think Christ banned the death penalty ? Please, yes or no.
To answer your question, I think it's good to strive to obey God, and not seek reasons not to. There's no way you can deny your stance comes from your reasoning. Nipping at the edges of scripture, and putting your own prejudices into the argument has done nothing to give you any spiritual weight behind your assertion.
And I refuse to even enter into an argument about what Christ didn't say.