The information of this oracle was always trustworthy, for the meaning of the name Urim and Tummim is in the fact that "these answers spread light and truth," but not every high priest succeeded in obtaining them. Only a high priest who was permeated with the Holy Spirit, and over whom rested the Shekinah, might obtain an answer, for in other cases the stones withheld their power. But if the high priest was worthy, he received an answer to every inquiry, for on these stones were engraved all the letters of the alphabet, so that all conceivable words could be constructed from them.