Al-A'raf · 7:185

185. Do these people learn nothing from seeing Allah’s control of the heavens and the earth, and all the animals and plants and other things that Allah created in them, and their own life spans, the end of which may be near, so that they might repent to Allah before the time has gone? If they do not have faith in the Qur’ān and the promises it contains, what other book will they believe in?