What are the verses that protect a Muslim from committing adultery and drinking alcohol, and what are the benefits of generally reading and memorizing the verses of the Qur'an?

There are Qur'anic verses that help protect against falling into sins, such as Ayah al-Kursī, the concluding verses of Sūrat al-Baqarah, and Sūrahs al-Ikhlāṣ, al-Falaq, and al-Nās. Prophetic narrations have been transmitted illustrating their virtues. Among them are that reciting Ayah al-Kursī before sleep protects one from Satan, and reciting the last two verses of Sūrat al-Baqarah suffices against all harm that night, and reciting al-Ikhlāṣ and the two Muʿawwidhatayn three times in the morning and evening suffices against everything.

It is also recommended to frequently read books on encouragement (targhīb) and deterrence (tarhīb), to maintain remembrance of Allah and prayer in congregation, to attend gatherings of knowledge, and to associate with the righteous. For remembrance fortifies one against Satan, and prayer prohibits indecency and evil.

Finally, the Qur'an is a book of guidance, so one should frequently recite it, ponder its meanings, and inquire about anything unclear in its meanings, while knowing that most of what is narrated about the secrets of verses and virtues of surahs is not authentically established.