How union with Christ changes our attempts to resist sin:
“Before being joined to Christ, when I resisted sin I was like a prisoner who tries to escape over the prison wall before his sentence is paid. When sin the jailer catches up with me and tells me to come back into prison, I have no choice but to go, because I am guilty and the penalty is not paid. But when the Christian resists sin he is like a prisoner who is released through the prison gate after serving his sentence. When the jailer threatens him and tells him to return to prison, he need not go. The only power that sin has over the Christian is the power of bluff.”
– Christopher Ash, Teaching Romans (2008) at 229.