According to search-discovered classical Islamic scholarship, the concept of Divine Penalty (العقاب - al-'iqab) is a fundamental aspect of Allah's divine justice. It refers to the severe and certain consequence that follows willful transgression and opposition to God and His Messengers. Across numerous Quranic verses, particularly the recurring phrase 'Shadid al-'Iqab' (Severe in Penalty), scholars like Ibn Kathir and Al-Qurtubi explain this is not an arbitrary act, but a manifestation of Allah's perfect power and justice against those who reject clear signs. This severity, however, is invariably balanced with declarations of Allah's vast forgiveness and mercy, as seen in verses like 5:98 and 40:3. The synthesis of these themes shows that the penalty serves as a deterrent and a consequence of rebellion, while the door to repentance and mercy remains perpetually open, thus framing the believer's relationship with Allah in a healthy balance of hope (Raja) and fear (Khawf).