The Baby Buggy

Aaron and Sarah are an Amish couple who try for years to make a baby but cannot. One night, they hear a horse and buggy ride furiously through the town. Aaron stops the horse only to find a baby inside the buggy. No one claims the child but the husband wants to give it up for adoption...Sarah, however, insists that the baby is a gift from God. But who does the baby belong to and how did it get there?