Mark 16:17-18. And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues; They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.
T.B.Joshua is not God but he is a servant of God being used by God, believe it or go and quench period.
May God bless you my dear, tell them that possess with demonic spirit and let them hear.