• General introductions to thematic interpretation and its development, its origin, its emergence and reasons, its importance and need for it, with an explanation of the term thematic interpretation, and the extent of the convergence of scholars' opinions on it. • Explaining its concept between the past and the present. • Explaining the types of thematic interpretation, its benefits, and comparing it with other types of interpretation. • Applied study: Thematic unity and thematic interpretation: A study of the detailed steps in the method of thematic interpretation. A study of five topics, and four surahs between Meccan and Medinan.