ABU DHABI, United Arab Emirates — The opulence of Abu Dhabi is not subtle.

Bentleys line the roads, glass skyscrapers rise like blades over corporate business parks, a multibillion dollar hotel once used jewels as ornaments, and the presidential palace gleams with marble and sparkles with crystal chandeliers.

But valeting those cars, cleaning those hotel rooms, servicing those high-rise elevators and preparing watermelon appetizers for guests in the presidential palace are millions of migrants, many of whom are Catholics from India, the Philippines and South America.

On Tuesday, the last day of his 40-hour visit to the United Arab Emirates, Pope Francis came to speak to them directly.

“I have goose bumps,” said Khristina Garcia, a 32-year-old emergency room nurse from the Philippines who has lived in Abu Dhabi for five years. She was one of the roughly 135,000 Catholics, many of whom had received a state-sanctioned day off work, who filled the stands and surrounded Zayed Sports City Stadium on a warm and bright Tuesday afternoon. “I feel blessed,” she said.