When Osvier Acosta Ferrero, 72, and Ricardo Tadeo Soria Perez, 58, peddle down dirt roads on their bicycles, they’re not out for exercise. They’re praying for Cubans who need Christ. These Cuban Baptists sing hymns as they cycle for miles, traveling to rural communities to lead Bible studies. “If someday God sends us to another country, we’ll go,” Ferrero said.…