What is Matthean fulfilment (pl?r?sis)? According to a triplex via consisting of fundamental continuity, radical discontinuity, and transcendence-completion, it is the process of Christification by which those in communion with Christ become agents of his theandric activity. In light of this paradigm, the divine ‘with-ness’ which Christ brings his people is more profoundly appreciated. The fullness which God’s covenant people enjoy via communion with Christ is nothing less than the very fullness of God: they participate in His life and love, power and providence, righteousness and perfection, virtue and glory, identity and mission. In this monograph, Andrew D. Dalton argues that pl?r?sis is an ongoing and ever deepening process of deification: in and through the King of kings, God has filled inaugurally, is filling perpetually, and will fill consummately his Israel— basileia und ekkl?sia —with his own divine fullness.