The Epistle to the Hebrews offers biblical evidence that the Holy Spirit is both fully divine and a distinct person. Within the epistle, the author identifies the Spirit as “eternal,” presents the Spirit as speaking God’s words as recorded in Old Testament quotations, and yet also distinguishes the Spirit as a separate agent from the Father and the Son. This article examines several references to the Spirit in Hebrews and shows how the author’s depiction is consistent with the Trinitarian understanding of the Holy Spirit as fully God and personally distinct from both the Father and the Son.