Infuriate your enemy
One worldly wit advised, ‘Always forgive your enemies. Nothing infuriates them more.’ It is possible to be outwardly forgiving without showing real love. But it is love that Jesus looks for.
Leon Morris, Luke: An Introduction and Commentary, vol. 3, Tyndale New Testament Commentaries (Downers Grove, IL: InterVarsity Press, 1988), 150.