Hebrews 4:15 — "we do not have a high priest who cannot sympathize..." — became a touchstone for how Christians understand who Jesus is and what his suffering accomplishes. This episode examines how the historic Trinitarian tradition read that verse: as proof that the divine Son truly became human, felt our temptations, and intercedes for us as eternal high priest. We trace the verse through the Fathers, medieval theologians, and the Reformers, showing the theological logic that tied sympathy, priesthood, and atonement together — and why that logic set the stage for later Socinian critique.