'He went up the mountain; and when he had sat down…' (Matthew 5:1) — the unnamed hillside of the Sermon on the Mount, somewhere above the Sea of Galilee's northwest shore near Capernaum, the ministry's home base. Tradition since the Byzantine pilgrims has settled on the slope now called the Mount of Beatitudes above Tabgha — a natural amphitheater where a seated voice genuinely carries. Luke's parallel sermon stands 'on a level place' (6:17); a plateau on a hillside satisfies both readers and both texts.