Vajrasattva actually attained Buddhahood a long time ago, but his pledge has not been exhausted. Relying on the power of his pledge, our obscurations are bound to be purified. Vajrasattva is a Buddha, and so he doesn’t really need us to remind him of his pledge. However, to express our devotion and sincerity, we still need to supplicate him.  

~Depicted from VAJRASATTVA PRACTICE – THE WISH-­FULFILLING JEWEL