They have rejected the Holy Quran although it is the truth. The rejection of it had begun since the era of revelation and will remain till the time when Allah (swt) inherits the earth and everyone on it. However, this rejection has taken on a variety of forms. For example, when the Quran was revealed, they used to say:
أَسَاطِيرُ الْأَوَّلِينَ اكْتَتَبَهَا فَهِيَ تُمْلَى عَلَيْهِ بُكْرَةً وَأَصِيلًا
(These revelations are only) ancient fables which he has had written down, and they are rehearsed to him morning and evening.”) (Al-Furqan: 5)
They also used to claim that the Prophet (saws) was a magician or a madman, as the following verses tell us:
كَذَلِكَ مَا أَتَى الَّذِينَ مِن قَبْلِهِم مِّن رَّسُولٍ إِلَّا قَالُوا سَاحِرٌ أَوْ مَجْنُونٌ
(Similarly, no messenger came to those before them without being told: “A magician or a madman!”) (Adh-Dhaaryat: 52)
وَقَالَ الَّذِينَ كَفَرُوا لَا تَسْمَعُوا لِهَذَا الْقُرْآنِ وَالْغَوْا فِيهِ لَعَلَّكُمْ تَغْلِبُونَ
(The disbelievers advised (one another), “Do not listen to this Quran but drown it out so that you may prevail.”) (Fussilat: 26)
They rejected the Holy Quran, because it brought the divine path which stopped mankind from following their desires. Human beings are forever in conflict, but they do not disagree upon matters which yield to experience or experiments. For example, there is no such thing as Russian electric or American electric, everyone uses the same electricity. Likewise, all human beings benefit from the theory of gravity, the theories connected to space and modern technology. Moreover, countries might even work together to develop these things. This is because, these things are connected to experiment and are not subject to desires or morals values. However, in issues connected to moral values, we can see conflicting opinions, for example, there is Capitalism, Socialism, Communism, different Schools of thought and diverse opinions. Thus, human beings differ, and these differences could lead to battles. As such, the teachings, i.e., the path to follow, comes from Allah (swt), whereas the first people to oppose these teachings are those who cause corruption on the earth. So, as they oppose these teachings, they also go against the Prophet (saws), as Allah (swt) tells us: (Still your people (O Prophet) have rejected it.)
The Holy Quran has been continuously subject to systematic attacks. When people were not able to distort its words, they distorted its interpretation. The opposing Zionist and Western groups work tirelessly to issue statements which cast doubts on the Book of Allah (swt); at times arguing that it goes against science, and at times employing other arguments. However, all these scientific realities have proven that conflict between science and the Holy Quran is not possible, because a scientific reality is of the creation of Allah (swt), and the Holy Quran is the Speech of Allah. Furthermore, the scientific realities are not created but discovered, and everything that is created is built upon that which has been discovered. Thus, all of it goes back to the Creator, the One who has sent the Speech. Since the Creator and the One who sent the Speech is none other than Allah (swt), science can never conflict with the faith in Allah (swt).
If there happen to be discrepancies, it must be that either the meaning found in the verse is suppositional, or the scientific theory is incorrect, such as the Theory of Evolution.
Allah (swt) has described the Holy Quran as (the truth) meaning,
‘something which is established and confirmed’. Therefore, it is not possible that any verse in the Book of Allah (swt) is not true. There are more than a thousand verses which give scientific explanations clearly. So, science can never clash with the Holy Quran, as the latter is the truth.
Also, any thinking person will not at all allow a person who does not understand the Holy Quran, is not specialized in the Science of Exegesis, or is not specialized in all of the Islamic Sciences, to embark upon interpreting the Book of Allah (swt), or to claim that Allah (swt)means this word to mean so-and-so.
In summary, all the things mentioned above are conflicts which will never abate between truth and falsehood and show extremely obvious attempts to cast doubts upon the Holy Quran.