Yav (Jav), Prav and Nav (Navi) are three worlds described in the Book of Veles. References to them became popular among Ukrainians and Russian neopagans. All three combine into Triglav that governs the Universe. Yav is the material world in which we are right now. Gods, however, are equally part of Yav. Yav is contained within Nav. Nav (Navi) is t...