The Pen (القلم, al-qalam) is the sixty-eighth chapter of the Qur'an with 52 verses
Quran:68 describes God's justice and the judgment day.
Three notable themes of this Surah are its response to the opponents' objections, warning and admonition to the disbelievers, and exhortation of patience to the Islamic prophet Muhammad.[1] Chronologically, this was the first appearance of any of the "disjointed" [i.e., single] letters (muqattaat) which precede a number of the surahs of the Qur'an,[2] while in Quranic order this is the last surah to have the appearance of muqattaat.[3]
Summary
1-8 Muhammad not a madman nor an impostor
9-16 Invective against a prominent enemy of Islam
17-34 The example of certain gardeners a warning to the Makkans
35-47 Unbelievers warned of coming judgment48-50 Muhammad exhorted not to be impatient, like Jonah51-52 Extreme hatred of the Quraish towards Muhammad and the Quran exposed