What is meant by "tanjim of the Qur'an" and what are its benefits, along with mentioning four benefits?

The Holy Qur'an descended to the lowest heaven on the Night of Qadr as a single whole, then it was revealed in parts (piecemeal) to the Prophet Muhammad, peace be upon him, over a period of twenty, twenty-three, or twenty-five years, depending on events and occurrences. The reason for its piecemeal revelation was to strengthen the Prophet's heart and console him, as revelation was renewed with each incident, increasing his attention and bringing him joy. Among the benefits of this piecemeal revelation were the facilitation of its memorization, the existence of abrogating and abrogated verses, and the provision of answers to questions and events.