Most of Mike’s co-workers knew little about Christianity, nor did they seem to care. But they knew he cared. One day near the Easter season, someone casually mentioned that they’d heard Easter had something to do with Passover and wondered what the connection was. “Hey Mike!” he said. “You know about this God stuff. What’s Passover?”

So Mike explained how God brought the Israelites out of slavery in Egypt. He told them about the ten plagues, including the death of the firstborn in every household. He explained how the death angel “passed over” the houses whose doorframes were covered by the…