Rudy Giuliani reacted this morning to President Obama comparing violence by Christians in the Crusades to the atrocities of ISIS. 

Two days after a Jordanian pilot was burned alive by ISIS terrorists, the president compared the terror army's acts to violence committed by Christians in the Crusades.

And he said Christ was also used as a justification for slavery and racial discrimination in the United States.

“Humanity has been grappling with these questions throughout human history. Unless we get on our high horse and think this is unique to some other place, remember that during the Crusades and the Inquisition, people committed terrible deeds in the name of Christ. In our home country, slavery and Jim Crow all too often was justified in the name of Christ," the president said at the National Prayer Breakfast.

Giuliani said the president's statement is the "absolute wrong thing at absolutely the wrong time." 

"He's as weak a historian as he is a president, and as weak a theologian," said Giuliani, as he laid out why the president's argument is actually inaccurate historically. 

Giuliani argued that ISIS actions now "can be justified by words that I can pull right out of the Koran and show you."

He said in the Crusades both sides committed atrocities, but the Christians were responding to the Muslims' invasion. 

"[ISIS] is stoning women for adultery. ... They're killing Christians, they're trying to wipe out Christians. It isn't a reaction to what we're doing. We're not doing the same thing to them. ... When is he going to start standing up for us, for our Western values that have civilized the world?" he asked.

Giuliani said the statements were "silliness," and argued that our enemies do not fear this president. 

"An American president has to be tough. It isn't bad if our enemies are afraid of the President of the United States. It isn't bad if the people who want to come here and kill us are afraid of the President of the United States. Do you think any of them are afraid of him?!" 

Watch the full interview above.