There are great trials which a person faces, so it is obligatory for him
to have knowledge of them so that he is able to stay clear and overcome
them if he is trialed.
So, one must first have knowledge and insight of Islam, its rules and
regulations. One must know those things which turn us away from Islam
and the barriers which obstruct the servant of Allaah from worshipping
Him. One must know the things that affect their faith, such as sins, in
order to keep away from their harm and reap the benefits (of being
steadfast). If a person does not know those affairs that can harm and
misguide him, they may destroy him. Allaah ordered us to hold fast to
this religion until we die.