The author examines two gter-mas (‘revealed texts’), the Bka’ chems ka khol ma and the Mani bka’ ’bum, both transmitted as the testaments of the ancient Tibetan king Srong btsan sgam po. The doctrines and practices elucidated in these gter mas focus on the Bodhisattva Avalokitesvara. Those of the Mani bka’ ’bum in particular are known as the King’s Tradition, which emphasizes mind-oriented practices aimed towards the recognition of one’s own mind as Buddhahood, the Buddha-nature that pervades all sentient beings.