The grand mufti of Saudi Arabia had better get a clue. The Lord in Matthew 16:18 says: I will build my church; and the gates of hell shall not prevail against it. Is this puny little man in control of Hell also? His father the Devil still owns it, and has his reservation all made out!
And might I further point out that gates are NOT an offensive weapon; they are a DEFENSIVE asset, and they WILL be blown wide open by the praying, prophetic Church.
This little demonized mufti can try to get something started, but The Bride of Christ -- hand-in-hand with her Bridegroom God -- will be the one to FINISH it!