The Sōtō school of Zen Buddhism venerates the founder of Buddhism, Shakyamuni Buddha, as its main deity. The lineage recognizes Dōgen Zenji (Kigen Dōgen) as its ancestral master for correctly transmitting the teachings of Shakyamuni Buddha, especially the practice of zazen (seated meditation). Additionally, the lineage reveres Keizan Zenji (Gikai Taizan) for his active propagation of these teachings. Shakyamuni Buddha, Dōgen Zenji, and Keizan Zenji are collectively referred to as the "One Buddha, Two Ancestors" (Sōtō Sanzon Butsu) in the Sōtō Zen tradition. They are honored and revered as spiritual guides in life and are subjects of veneration.