"Private devotion" refers to a personal and individual practice of showing deep religious or spiritual faith or commitment privately, usually without the presence or involvement of others. Full definition
Among them will be never - before exhibited altarpieces from the churches of Bergamo and paintings made for private devotion that reflect the new religious ideals of his time. (royalacademy.org.uk)
Yet throughout his prodigious and successful career, he and his bustling workshop also created imposing altarpieces and smaller religious paintings for private devotion or collectors, striking portraits, depictions of sensual episodes drawn from the classical tradition, and majestic allegories glorifying the Venetian state. (museumpublicity.com)
The psalms are widely used in worship and private devotion and the basic Eucharistic Prayer is none other than that of Hippolytus of Rome! (faith.org.uk)