Buddhas have manifested in the form of various Dharma Protectors, such as Mahakala, Kalarupa, Kalindewi, and Dorje Shugden. From the time of Je Tsongkhapa until the first Panchen Lama, Losang Chokyi Gyaltsen, the principal Dharma Protector of Je Tsongkhapa's lineage was Kalarupa. Later, however, it was felt by many high Lamas that Dorje Shugden had become the principal Dharma Protector of this tradition.

There is no difference in the compassion, wisdom, or power of the various Dharma Protectors, but because of the karma of sentient beings, one particular Dharma Protector will have a greater opportunity to help Dharma practitioners at any one particular time. We can understand how this is so by considering the example of Buddha Shakyamuni. Previously the beings of this world had the karma to see Buddha Shakyamuni's Supreme Emanation Body and to receive teachings directly from him. These days, however, we do not have such karma, and so Buddha appears to us in the form of our Spiritual Guide and helps us by giving teachings and leading us on spiritual paths. Thus, the form that Buddha's help takes varies according to our changing karma, but its essential nature remains the same.

Among all the Dharma Protectors, four-faced Mahakala, Kalarupa, and Dorje Shugden in particular have the same nature because they are all emanations of Manjushri. However, the beings of this present time have a stronger karmic link with Dorje Shugden than with the other Dharma Protectors. It was for this reason that Morchen Dorjechang Kunga Lhundrup, a very highly realized Master of the Sakya tradition, told his disciples, `Now is the time to rely upon Dorje Shugden.' He said this on many occasions to encourage his disciples to develop faith in the practice of Dorje Shugden. We too should heed his advice and take it to heart. He did not say that this is the time to rely upon other Dharma Protectors, but clearly stated that now is the time to rely upon Dorje Shugden. Many high Lamas of the Sakya tradition and many Sakya monasteries have relied sincerely upon Dorje Shugden.

In recent years the person most responsible for propagating the practice of Dorje Shugden was the late Trijang Dorjechang, the root Guru of many Gelugpa practitioners from humble novices to the highest Lamas. He encouraged all his disciples to rely upon Dorje Shugden and gave Dorje Shugden empowerments many times. Even in his old age, so as to prevent the practice of Dorje Shugden from degenerating he wrote an extensive text entitled Symphony Delighting an Ocean of Conquerors, which is a commentary to Tagpo Kelsang Khedrub Rinpoche's praise of Dorje Shugden called Infinite Aeons.