Abstract: Abstract: This research deals with the aspects of structural parallelism mixed with the morphological aspects within the interrogative and conditional styles in the Holy Qur’an. Hence, this research aimed to highlight these aspects and explain the rhythmic elements they carry, in addition to talking about the semantic aspects that are associated with these two styles in the Book of God Almighty. The research came within three elements: the first represented by talking about the concept of parallelism and syntactic parallelism, the second dealt with talking about the manifestations of this parallelism within the
interrogative style in the Holy Qur’an, while the third dealt with talking about this parallelism within the subjunctive style. The research reached a set of results, the most important of which was that there is a prominent role for
parallelism in shaping grammatical styles in the Book of God Almighty, and this parallelism also had an impact on meaning and connotation.
Keywords: Syntactic parallelism, interrogative questions, conditionals, the Holy Qur’an.