In fact nothing prevented Us from sending you O Muhammad to the people with the power of working miracles to evince both your mission and Allah's Omnipotence and Rightful Authority except that people of bygone times refused to acknowledge them. Among them were the Thamudites to whom We sent the she –camel- as an evident and undoubted sign, but they mistreated her without due regard and wronged themselves. We only authorize the work of miracles so that the people be moved with a mingled feeling of dread and reverence toward Allah and realize the evil consequence of disobeying or denying Him.