May 20

He [the Báb] hinted at the secret, and announced the approach, of a still mightier Day, and bade them [Letters of the Living] prepare themselves for its advent. He called to remembrance the triumph of Abraham over Nimrod, of Moses over Pharaoh, of Jesus over the Jewish people, and of Muhammad over the tribes of Arabia, and asserted the inevitability and ultimate ascendancy of His own Revelation. 
- Shoghi Effendi  (‘God Passes By’)