It was early Christmas morning. The sun had not yet risen. It was brisk; there was a bite in the air, and the streets of downtown Phoenix, Arizona, were empty, except for a line of people, bundled in coats and blankets, and sleeping in tents along one wall of the Phoenix Convention Center. Several held colorful flyers with the words “free medical care” on them. They were waiting for a free, three-day mega mobile hospital operated by Your Best Pathway to Health, a humanitarian service of the Seventh-day Adventist Church, to open the doors at 7 a.m.