When the ‘Aad were warned of the punishment of Allah Ta‘ala then there were different types of responses; some totally denied the message while among others there were those who felt that we need to be guided but we do not require a nabi. We can acquire guidance by ourselves, as we are men just as he (the nabi) is. When you do not listen to a nabi and feel that you can do everything by yourself then your understanding also becomes corrupt. Filth and evil begin to seem as good. You will have to go by someone’s reasoning and explanation and that is the teachings of the Quraan and hadeeth. Doesn’t Allah Ta‘ala deserve something when He has honoured us so greatly and saved us from disgrace. Imagine if Allah Ta‘ala had exposed all our thoughts and fantasies that ran through our minds from the time we became of age. What would become of us?
Allah Ta‘ala says that He is the First i.e. there is none that precedes Him, and He is Apparent i.e. His existence is apparent and it prevails over everything else. In everything you can see Allah Ta‘ala if you have a sense of justice. He can be understood in everything though we may consider those things to be insignificant. Even the human seed that man pours out is a sign of the existence of Allah Ta‘ala. Hence, there is no reason for man to deny Allah’s existence.
Source: Al-Haadi