My first sighting of the flight of tens of thousands of crows at dusk in East Vancouver was eerie and foreboding. But over the years, I've grown used to this cacophonous, raucous parade in the sky that takes place twice a day as these birds travel between the beaches and their rookeries.

These midair birds fly higher up than songbirds but closer to the earth than soaring eagles, and they are flourishing in many cities today. They have even been dubbed the "Einstein bird" for the ways they have adjusted their behavior to human patterns. Crows have learned that threats are fewer and food is more plentiful in urban areas, so they live in abundance in protected parks, and they glean from the messes that humans leave behind.

The Bible has many references to these prolific birds that God has appointed in his plan to bring justice, and in Revelation 19 they are called to devour evil rulers. Acknowledging these swarms, or murders, of crows is chilling and unpleasant, but we also have the hopeful promise that God will not allow evil to have the final word. There are things that happen in the world that break our hearts; we recognize corruption and evil. But in Christ we are assured that one day things will be made right again.