This study examines the structural and thematic coherence in the Qur'an. The main goal of this work is to show that the Qur'an exhibits coherence in itself as a whole text and in all of its suras (chapters); and that each sura of the Qur'an constitutes a full meaningful unity. This treatise responds to the unfounded claims toward the connectivity of the Qur'an; hence, it will answer those who claim that the Qur'an lacks textual and thematic coherence.