The Power of His Mercy and Wisdom

In some other Buddhist scriptures, the Sanskrit term for the eternal Buddha is Dharmakaya, which is understood to mean that the truth itself is the Buddha. But the truth as an abstraction has no power to save us. Only when Sakyamuni realizes the truth in his person and activates the character of a Buddha in his practice does he become able to save us by the power of his mercy and wisdom.

Introduction to the Lotus Sutra