Surah 18. Al-Kahf, Ayah 56

The Prophets of Allah are not sent to humour us with dialectics or satisfy the vulgar curiosity for miracles or dark unusual things. There is no "crookedness" (xviii. 1) in their preaching. They come to preach the Truth,-not in an abstract way, but with special reference to our conduct. They give us the good news of salvation lest we despair in the presence of Sin, and to warn us clearly of the dangers of Evil. Vain controversies about words only weaken their mission, or turn it into ridicule. The ungodly have a trick also of treating the earnest preaching to them itself as a jest and ridiculing it.