Our first reading, from the Old Testament, sees God drawing Abram into faith, with a miracle and promises of innumerable descendants. The Psalm affirms our desire for God: “Your presence, O Lord, I seek.” In the second reading, Paul tells the Philippians to avoid men who behave badly. “Their end is destruction,” he warns. “…stand firm in the Lord.” Our Gospel from Luke relates the Transfiguration, when the three apostles struggle to hold their ground at the vision of the glorified Jesus.