Jav, Prav et Nav

Prav (Правь), Yav (Явь) and Nav (Навь) are the three dimensions or qualities of the cosmos as described in the first chapter of the Book of Light and in the Book of Veles (a fabrication from the 19–20th century) of Slavic Native Faith (Rodnovery). Older sources mention only Nav and Yav concepts of ancient slavic cosmology, similar to Yin and Yang in Taoism, and Prav was not part of the concept. The literal meanings of the Prav, Yav, and Nav words, are, respectively, "Right", "actuality" and "probability". They are also symbolised as a unity by the god Triglav (the "Three-Headed One"). Already