Jozanne Moss, in South Africa, and Michael Wenham, in Britain, have only met by email. Both struggle daily with Lou Gehrig's Disease, a progressive and ultimately fatal condition, which destroys the body while leaving the mind fully alert. Both are married to remarkable people who support and care for them.

Through Jozanne's story they address the myth that pain and suffering are sent by dark powers, and that God is only responsible for the good bits. Michael...