Basilica of San Vitale, presbytery, north wall, lunette, mosaic decoration: representations of two episodes of Story of Abraham (Genesis). Lunette, left side: Abraham and the Three Angels. Sarah stands inside the shed, while Abraham offers a veal dish to the angels. The angels are depicted taking three cross breads on the table. Lunette, right side: Sacrifice of Isaac. Abraham, clad in sacerdotal clothes, holds a knife in his right hand and he touches Isaac’s head with his left. A ram on the ground will replace Isaac. On top left side, in the middle of a cloudy sky, the divine hand detains Abraham to kill his own son.