Radu Gheorghita explores the discernible and distinct influence exerted by the Septuagint on the Epistle to the Hebrews. Has the author of Hebrews formulated his argumentation in a way that he would not have done had he been expounding the Hebrew text? Is it legitimate to affirm that the Septuagint had a determinant role in the shaping of the Epistle? The investigation focuses on five aspects of influence on passages in which the argument is developed on a Greek text divergent from a Hebrew text. It concludes with an in-depth analysis of the use of Hab 2:3-4 and argues that the significant editorial changes are concurrent with the textual tradition and theology of the LXX Habakkuk.