Seraphim of Sarov, born Prókhor Isídorovich Moshnín (Mashnín) [Про́хор Иси́дорович Мошни́н (Машни́н)], is one of the most renowned Russian saints and is venerated in the Eastern Orthodox Church and the Anglican Communion. He is generally considered the greatest of the 18th-century startsy (elders). Seraphim extended the monastic teachings of contemplation, theoria and self-denial to the layperson. He taught that the purpose of the Christian life was to receive the Holy Spirit. Perhaps his most popular quotation amongst his devotees is "acquire a peaceful spirit, and thousands around you will be saved."

A starets is an elder of an Eastern Orthodox or Eastern Catholic monastery or convent who functions as venerated adviser and teacher. Elders or spiritual fathers are charismatic spiritual leaders whose wisdom stems from God as obtained from ascetic experience. It is believed that through ascetic struggle, prayer and hesychasm, the Holy Spirit bestows special gifts onto the elder including the ability to heal, prophesy, and most importantly, give effective spiritual guidance and direction. Elders are looked upon as being an inspiration to believers and an example of saintly virtue, steadfast faith, and spiritual peace.