"...Say: Divine Signs (ayat) are indeed with Allah. And most certainly, I am only a clear warner!" XXIX:50
"Say: 1 have no power over any good or harm to myself except as Allah willeth. If I had knowledge of the unseen, I should have multiplied all good, and no evil should have touched me. 1 am but a warner and bringer of glad tidings to those who have faith." Vll:188
These ayat elucidate that in the din of Allah, only He, the Almighty has the Divine power and authority. In some religions, their leaders are thought to have this Divine authority to abrogate, select and change Allah's Message without His authorisation.