Beth Racine had just come out of church after confession in Medjugorje and was leaning against a wall when something caught her eye. A disc covered the sun. She saw swirling colors to the sides — red on one side and white on the other — that made her think of the image of Divine Mercy.

The Vatican on Thursday gave the green light for Catholics to continue flocking to a southern Bosnian village where children reported seeing visions of the Virgin Mary, offering its approval for devotion at one of the most contested sites of Roman Catholic practice in recent years.