Ephesians 4:27

And do not give the devil opportunity (to lead you into sin by holding a grudge, or nurturing anger, or harboring resentment, or cultivating bitterness).

We have the authority to say NO! There will be opportunities in this life to let the devil have a stronghold if we let him.  The cost of losing peace and being in resentment is too high because it blocks our blessings and it blocks our ability to hear from God.  The devil will hound the thinking and keep bringing it up, but it will stop once he knows you mean business.  Use your authority and say NO!