Arguing about how it literally happened can be an easy way to avoid facing the people in your life you need to forgive. For the people who first heard this story, the story would have had a provocative, unsettling effect. The Assyrians? The Assyrians were like a huge, gaping, open wound for the Israelites. Bless the Assyrians? The story is extremely subversive because it insists that your enemy may be more open to grace and love than you are.