The Spider - 29:46
"Argue with the people of the Book in the best way, except the unjust, and say: "We believe in what has been sent down to us and what has been sent down to you. Our God and your God is one. To Him alone have we submitted."
The general warning/message of the Qur'an and therefore of the books revealed by Allah:
The Sandhills/46:21
"Remember when Ad´s brother warned his people in the sand dunes. Before and after that he said: "Do not serve none but Allah. I fear for you the torment of a great day"."
Prophet Abraham/14:52
This is a warning to the people. That they may listen to this warning and know that He is the only God, and that those who have understanding may take counsel.
The Bee/16:2
"He sends down the angels by revelation to whom He wills of His servants, conveying His command: "Warn the people: "There is no god but Me, and listen to Me."
The News/78:40
"We have warned you of an imminent torment. On that Day a person will look at what he has done, and the disbeliever will say: "Would that he were dust!"
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.
The Cattle/6:130
"O people of the jinn and mankind, have not messengers come to you from you, telling you My Verses and warning you of this Day? They said: "We are witnesses against ourselves". The life of this world deceived them and they testified against themselves that they were disbelievers."
The Cave/18:2
A perfect (Book). to warn of a severe punishment from Him, and to give glad tidings to the righteous believers of a good reward for them.
The Arabic Letter Sad/38:65
"Say, "I am only a warner, and there is no god but Allah, the One and Sovereign."
Mary/19:39
Warn them about the Day of Repentance when the judgment will be finalized. They are still in disbelief in their ignorance.
The Forgiver/40:15
The Raiser of the Degrees, the Owner of Governance. He sends down His revelation of His commands to whom He wills among His servants to warn them of the Day of Meeting.
The Family Of Imran/3:30
A day will come when every person will find every good deed before him. He will wish that there is a long distance between him and every evil he does. Allah is warning you about Himself. Allah is compassionate to the servants.
The Cattle/6:19
"Ask: "Whose testimony is the greatest?"Say: "Allah is the witness between me and you. I have been given this Qur´an to warn you and all those to whom it reaches. Do you bear witness that there is another god besides Allah?"Say: "I do not bear witness to that,"and then say: "He is the only God, and I am far from that which you associate partners with."
Council/42:7
Thus do We reveal to you a Qur´an in a perfect language so that you may warn the capital city and its environs and warn them of the Day of Gathering which is to come. Some of them will enter Paradise and some will enter Hell.
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 Abraham/14:44
"Warn the people of the Day when the torment will come to them. The wrongdoers will say, "Our Lord, postpone us until a near term, so that we may join your call and follow the messengers". But did you not swear before that your end would not come?"
The Forgiver/40:18
Warn them of the Day that is coming, then their hearts will be in their throats and they will swallow. For the wrongdoers there will be neither a friend nor an intercessor.
The Companies/39:71
"Those who disbelieve will be taken to Hell in heaps. When they arrive there, its gates will be opened and its guards will say to them: "Did not messengers come to you from your Lord reciting to you the Verses of your Lord and warning you that you will meet this Day"? "Yes. But the word ´punishment´ has been fulfilled for the disbelievers."