Did Prophet Muhammad SAW Warn Us of ISIS?

"At this time of dissension, he said there would appear "a group of young people who would be immature in thought and foolish." They would speak beautiful words but commit the most heinous of deeds. They would engage in so much prayer and fasting that the worship of the Muslims would appear insignificant in comparison. They would call people to the Quran but would have nothing to do with it in reality. The Quran would not go beyond their throats, meaning they wouldn't understand its essence at all, merely regurgitating it selectively. The Prophet then went on to describe these people as "the worst of the creation." 

OH.MY.GOD

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