Contrary to the prevailing view that βασιλεία is a verbal noun signifying God’s rule, this study demonstrates how the term’s pragmatic range in Matthew’s Gospel covers both five distinct types of use and their integration into a coherent concept. The study, which is the first to examine all occurrences of βασιλεία in the First Gospel from the perspective of semantic monosemy, extends and enhances our appreciation of the Matthean Zentralbegriff, and engenders a more accurate apprehension of the nature and aims of the Matthean narrative and the theological views it conveys.