Abraham offers the ultimate sacrifice of thanksgiving (Ps), the gift of his very son (1). This sacrifice prefigures the sacrifice of Jesus who died for us all (2). In his transfiguration, Jesus discloses a suffering messiahship (3). Gn 22:1–2, 9a, 10–13, 15–18 Ps 116:10, 15–19 Rom 8:31b–34 Mk 9:2–10