Pro-immigrant activists in Chicago are celebrating a “Christmas miracle” after an area hospital said it will provide free treatment for undocumented immigrants lacking health insurance, including several who need urgent organ transplants.

“A real miracle has occurred because we didn’t see this solution as possible by any means,” the Rev. Jose Landaverde, pastor of Our Lady of Guadalupe Anglican Mission in the mainly Mexican La Villita/Little Village neighborhood, told Efe on Wednesday.

Landaverde, members of his congregation and other religious groups, as well as activists fighting to unite families separated by deportations, held a Christmas “posada” ceremony on Sunday at Rush University Medical Center.