American evangelist Franklin Graham has time and again slammed radical Islam for the terrifying acts of cruelty and punishment its followers are inflicting on people, and he is not stopping now.

"The evils of radical Islam continue to horrify us. ISIS is now giving sex slaves as prizes for memorising the Koran," he wrote on his Facebook page. "This shocking practice of giving away human beings as prizes is called 'sibya' and was announced on ISIS Twitter accounts just a few days ago in honour of the beginning of Islam's month of Ramadan, which is observed by Muslims all over the world."

Graham said ISIS wants to demonstrate that they are the ones who most closely follow true Islam, and they are using the women and young girls they have captured to prove so. The pastor sympathises with these victims of war who are now facing "unbelievable atrocities."

He questioned US President Barack Obama for allowing such monstrosity to continue. He also asked why Obama is not supporting the Kurds, Yazidis, and others like them in protecting themselves against the ISIS jihadists. "At this time we don't need to put more American troops in harm's way when we have people who want to fight for their own freedom. Let's help them defend themselves," he said.

Graham has also called on Christians from all over the globe to continue praying for an end to ISIS' reign of terror in the Middle East and halt their planned expansion. "Radical Islam has brought so much destruction and horror to so many lives," he said.

Billy Graham's son visited the Middle East recently and saw for himself how ISIS operates. "I heard the gunfire in the distance, and I saw and heard firsthand of the handiwork of ISIS," he shared. "We were just a short distance from where ISIS was trying to take a community of Druze, a people who have lived there for hundreds of years."