The Cattle - 6:70
Leave those who take their religion as a pastime and are deceived by the life of this world. Remind them with this (the Qur´an) so that a person may not suffer the disastrous consequences of what he has earned. He has no Owner and intercessor except Allah. Even if he gives any ransom, it will not be accepted from him. These are the ones who suffer the disastrous consequences of what they have earned; they deserve a drink of boiling water and a painful torment because of their disbelief.
A reminder from the Qur'an to those who take other intercessors besides Allah:
The Cattle/6:51
Warn with it (the Qur´an) those who are filled with the excitement of their coming before their Lord: They have no owner and no intercessor (intermediary) except Him. Perhaps they will be protected.
Prophet Jonah/10:18
"They leave Allah and serve those who can do them neither harm nor good, and say: "These will intercede for us with Allah". Say: "Do you inform Him of what Allah does not know in the heavens and the earth? He is Most High, far from what you associate partners with."
The Companies/39:44
"Say, "To Allah belongs all intercession."To Him belongs the government of the heavens and the earth. Then to Him you will be returned."