The Quran, the holy book of Islam, was not revealed all at once. Rather, it was gradually revealed to Prophet Muhammad (peace be upon him) over about 23 years. Knowing the order of revelation provides deep insights into the formation of the early Muslim community and the gradual evolution of Islamic law and principles.
Scholars have analyzed the situations and timing of each chapter and verse carefully and divided them categorically into Medinan and Meccan periods. The Meccan revelations, which occurred before the migration of the Prophet to Medina, mostly dealt with setting up the basic principles of Islam: God's unity (Tawhid), prophethood, judgment day, and morality. Such initial verses typically utilized strong imagery and spoke out against the polytheistic conceptions that existed in Mecca.
After the migration to Medina, the revelations changed direction to socio-political legislation, describing laws relating to worship, family, governance, and warfare. The Medinan surahs treated the day-to-day needs of the young Muslim state and issued guidance for creating a fair and equitable society.
The study of the order of revelation of the Quran offers a chronological framework for tracing the evolution of Islamic thought and practice. It also identifies the rationale for introducing complicated laws in steps and focusing on core beliefs prior to tackling societal establishments. This step-by-step revelation supports the divine pedagogy in developing faith and directing mankind towards truth.