☞ Professor Plumptre supposes the Urim to have been a clear and colorless stone set in the breastplate of the high priest as a symbol of light, answering to the mystic scarab in the pectoral plate of the ancient Egyptian priests, and that the Thummim was an image corresponding to that worn by the priestly judges of Egypt as a symbol of truth and purity of motive. By gazing steadfastly on these, he may have been thrown into a mysterious, half ecstatic state, akin to hypnotism, in which he lost all personal consciousness, and received a spiritual illumination and insight.