: His most famous work, used by millions to prepare for the sacrament of penance.

John Krestiankin (1910–2006) was one of the most revered "elders" (startsy) of the late 20th century.

: One of the most comprehensive Orthodox encyclopedias providing "Experience in Building a Confession" and other spiritual guides.

: A collection of real pastoral advice sent to spiritual children over decades, covering marriage, monasticism, and illness.