The American Journal of Biblical Theology Vol. 23(25). June 19, 2022 Promises to Abraham and their Relation to Gentiles in the Church: a Study of Galatians, Chapter 3 Jacob S. Bullock Abstract Perhaps one of the most foundational aspects of Pauline theology is the unification of both Jews and Gentiles in Christ by faith. For first-century Jewish believers this raised the question of how the unity of their shared justification with the Gentiles in Christ through faith proceeded from both the Abrahamic covenant and the Mosaic Law. Namely, how can Gentiles who are not physical descendant of Abraham become heirs to promises YHWH made to him. Central to this question is the purpose and efficacy of the Law. These questions left early believers to debate whether Gentiles both needed to keep the Law to be justified. Using a biblical-theological approach this paper will argue that in his letter to the Galatian Church Paul presents the supremacy, centrality, and sufficiency of Christ as these answer to these questions. To support this argument this article provides a careful examination of Paul’s use of the Old Testament, his rhetoric, and use of language. This paper concludes that from Paul’s perspective Christ is both the true heir of Abraham and the only true Law-keeper and that the gift of the Holy Spirit is the par excellence proof of Paul’s claim that both Jews and Gentiles are justified solely through faith in the Messiah apart from the Law. Keywords: Galatians, Law, Faith, Pauline Theology, Soteriology, Justification