A newly released video by Islamic State (ISIS) terrorists showing the mass beheading of 21 Christians condemns the faith’s believers as “crusaders.”

“All crusaders: safety for you will be only wishes, especially if you are fighting us all together,” a man on the video says with a North American English accent. “The sea you have hidden Sheikh Osama Bin Laden’s body in, we swear to Allah we will mix it with your blood.”

The five-minute video, which includes the caption, “The people of the cross, followers of the hostile Egyptian church,” shows Egyptian Coptic Christian men on their knees in orange jumpsuits having their heads severed by black-clad terrorists.

President Barack Obama has yet to comment on the mass beheading of Christians by Islamic State terrorists, since he was golfing on Sunday at a private golf course owned by billionaire Larry Ellison.

The release of the Islamic State’s Christian beheading video comes a week-and-a-half after Obama infuriated Christians by using the occasion of the National Prayer Breakfast to lecture Christians not to get on their “high horse” about Islamic State terrorists burning a caged Jordanian pilot because “during the Crusades and the Inquisition, people committed terrible deeds in the name of Christ.”

The video also vows to expand the growing Islamic caliphate to “conquer Rome” — a reference to the fact ISIS is now less than 500 miles from the southern tip of Italy.