The Thirty-Five Confession Buddhas are known from the Sutra of the Three Heaps, popular in Tibetan Buddhism.  35 Buddha Confession Prayer This confession prayer is very well known in the Tibetan Buddhist tradition. Among English-speaking Buddhist followers, it is commonly referred to as the “Thirty-five Buddhas Confession Prayer.” The Thirty-five Buddhas are special confession buddhas who, while bodhisattvas, made special vows to assist others to overcome their negativities. Its actual title is the Sutra of Three .