The paper discusses the significance of recent developments in biblical exegesis for systematic theology and for the relationship between the two theological sub-disciplines, using the example of the adoption of memory-theoretical conceptions. In New Testament exegesis and historical Jesus research, this has led to the concept of the remembered Jesus in the New Testament texts. The scriptures are thus enhanced and function as the social memory of early Christianity, with which it constructs its identity. The remembered Jesus provides an approach that can be incorporated into a systematic theological Christology. It is incumbent upon this Christology to describe the inner workings of the Christian religion in the communicative transmission of the memory of Jesus Christ. Nevertheless, there remains a difference between the historical reconstruction of the genesis of the early Christians' faith in Christ and the dogmatic description of the Christian religion. Both theological sub-disciplines work with the same concept of the remembered Jesus, but it has a different function in each: in the one a historical and in the other a religious function.