This study employs a tri-level semiotic approach to examine how bodily icons in Qur'anic discourse are transformed from physiological descriptions into identity-defining markers that distinguish the self from the other, moving beyond traditional descriptive approaches confined to semantic and emotional levels. The study investigates the ideological mechanisms by which bodily icons shape visual identity and differentiate the believer from the unbeliever, and the hypocrite from the polytheist, focusing on three pivotal organs: the eye, the face, and the heart. Using a descriptive-analytical method, the study analyzes relevant Qur'anic verses across three ascending levels: the bodily signifier (movements and physiological states), the emotional signified (feelings and psychological states), and the ideological signified (the identity icon that determines religious affiliation and eschatological destiny). The findings reveal the Qur'an's transition from bodily signifiers—such as shifting gaze, blackened face, and sealed heart—to emotional signifieds—such as fear, joy, and tranquility—and finally to identity icons embodying faith or unbelief, through four semiotic mechanisms: duality, projection, fixation, and the dialectic between nature (fiṭrah) and divine legislation (tashrī'). The findings also disclose two strategies: constructing a visual identity that distinguishes believers and exposes hypocrites and polytheists, and consolidating self-surveillance through awareness of divine observation, transforming everyday action into worship.