
How do I know that I am required to believe in Allah?
Look within yourself. You will know that you are tested. Do you not have a feeling inside you telling you to do what is right and not to do what is wrong?
If there is money in front of you and its owner is not paying attention to it, then you may get the feeling of taking this money and benefiting from it, as well as the opposite feeling, telling you: Do not do that, for this is forbidden and a crime. You are tested in every situation of your life.
You have this “do and do not do” feeling within yourself because you are really tested and not left in vain. You are not something worthless. Allah Almighty said:
{Indeed, we showed him the way, whether he is grateful or ungrateful.} [Surat Al-Insān: 3]
Having this feeling of “do and do not do” means that a human will either be grateful or ungrateful in every aspect of his life. Rather, in every step of his life, he can either do good or not, i.e., either he can go to the mosque or engage in amusement.
For this reason, Allah, Exalted be He, said: {I have not created the jinn and mankind except to worship Me.} [Surat adh-Dhāriyāt: 56]