According to search-discovered classical Islamic scholarship, the 'slaying of prophets' (Qatl al-Anbiya') is a major Quranic theme representing the apex of disbelief (kufr), rebellion, and defiance against divine authority. Ibn Kathir's tafsir clarifies that this grave sin, repeatedly attributed to certain groups among the Children of Israel, was committed 'without right' (bi-ghayri haqq), emphasizing the absolute injustice of murdering messengers who only brought clear signs and guidance. This act is presented not merely as a historical crime but as a profound spiritual transgression stemming from arrogance and a refusal to follow divine law. The synthesis across verses like 2:61, 3:21, and 4:155 reveals a pattern where rejecting God's signs culminates in the ultimate act of violence against His messengers, leading to severe divine consequences including worldly humiliation and eternal punishment. This theme serves as a timeless and solemn warning to all humanity about the gravity of opposing divine truth and its bearers.