Iqbal defines the prophet as a mystic consciousness whose unitary experience overflows into collective life, and radically universalises waḥy as a property of life itself — operative in plant, animal, and human alike. He then introduces the developmental claim that will ground finality: prophetic guidance served humanity's minority, but life itself inhibits this mode once inductive reason matures.
Section 1 established the prophetic-mystic distinction as the evaluative framework for Lecture V: the mystic ascends and rests; the prophet ascends and returns to reshape the world. It introduced the pragmatic test — prophetic experience is judged by the cultural world it creates — and announced the lecture's programme: to examine the 'ruling concepts' of Islamic culture, beginning with the finality of prophethood. Section 2 now delivers the first half of that treatment, defining prophecy in philosophical terms and developing an extraordinary argument about waḥy (inspiration) as a universal biological phenomenon that reaches its highest expression in prophetic consciousness — a form of guidance that becomes functionally obsolete once rational consciousness matures.
The section advances through three tightly connected movements. First, Iqbal defines the prophet as a type of mystic consciousness in which 'unitary experience' overflows its boundaries into collective life — the prophet is not merely a mystic who happens to act, but a consciousness constitutionally oriented toward the transformation of collective existence. The finite self 'sinks into his own infinite depths only to spring up again, with fresh vigour, to destroy the old, and to disclose the new directions of life.' This definition makes the prophet's creative return (established in Section 1) part of the very structure of prophetic consciousness, not an accidental addition to it.
Second, Iqbal radically universalises the concept of waḥy. Drawing on the Qur'an's own usage, he argues that inspiration is not a supernatural intrusion into an otherwise natural world but 'a universal property of life' that manifests differently at different evolutionary stages — the plant growing freely in space, the animal developing a new organ, the human being receiving light from within. This biologisation of revelation is one of the most daring moves in the entire Reconstruction: it naturalises prophecy without diminishing it, placing it within the order of life's creative evolution rather than outside it.
Third, and most consequentially, Iqbal introduces the developmental argument that will ground the finality doctrine in Section 3. During humanity's 'minority' — its pre-rational stage — psychic energy produced prophetic consciousness as 'a mode of economizing individual thought and choice by providing ready-made judgements, choices, and ways of action.' But with the birth of reason and the critical faculty, life itself 'inhibits the formation and growth of non-rational modes of consciousness.' Prophecy was not abolished by divine decree but superseded by the maturation of human rational capacity — a maturation that the prophetic consciousness itself, at its highest, recognised as necessary. The section closes with a pointed critique of ancient philosophy as 'the work of abstract thought' that systematised religious beliefs but provided 'no hold on the concrete situations of life' — setting up the contrast with the empirical orientation that Islam, in Iqbal's reading, would introduce.
This section is philosophically explosive. It reframes prophecy as a natural-historical phenomenon, renders it continuous with biological evolution, and prepares the argument that Islam's greatest cultural contribution was to declare the prophetic mode of consciousness complete — thereby liberating humanity for independent rational inquiry. The theological implications are immense and contested: Iqbal is arguing, in effect, that the end of prophecy is not a loss but a graduation.