Je Tsongkhapa was an emanation of the Wisdom Buddha Manjushri, as indicated by his holding the Wisdom Sword and scripture of the Perfection of Wisdom Sutra. His appearance in fourteenth-century Tibet as a monk, and the holder of the lineage of pure view and pure deeds, was prophesied by Buddha.

He spread a very pure Buddhism throughout Tibet, showing how to combine the practices of Sutra and Tantra, and how to practise pure Dharma during degenerate times. His tradition later become known as the 'New Kadampa', 'Gelug', or 'Ganden Tradition'.
 
For more information, see the books Great Treasury of Merit and Heart Jewel, the sadhanas Offering to the Spiritual Guide, Heart Jewel and Wishfulfilling Jewel, and the CDs Song to the Spiritual Guide, Kadampa Prayers and Songs from the Joyful Land.