According to persecution charity Open Doors, a 24/7 prayer meeting has been running constantly in the country, which cannot be identified for security reasons, since 2003. Local Christians believe they have seen miracles as a result of the constant stream of prayer.

UK volunteer Holly (name has been changed) recently took more than 30 Bibles and other Christian books into the country, where it is illegal to print Christian literature.

"There are church leaders who only have a few pages of scripture that they own," she said. "The church is growing so rapidly and people are just coming to know Jesus so quickly, they need to get Bibles in as quickly as they can and as many as they can. And not just Bibles, but also training materials for ...