There were temples of Yat-Zar on every time-line of the Proto-Aryan Sector, for the worship of Yat-Zar was ancient among the Hulgun people of that area of paratime, but there were only a few which had such installations as this, and all of them were owned and operated by Transtemporal Mining, which had the fissionable ores franchise for this sector. During the ten elapsed centuries since Transtemporal had begun operations on this sector, the process had become standardized. A few First Level paratimers would transpose to a selected time-line and abduct an upper-priest of Yat-Zar, preferably the high priest of the temple at Yoldav or Zurb. He would be drugged and transposed to the First Level, where he would receive hypnotic indoctrination and, while unconscious, have an operation performed on his ears which would enable him to hear sounds well above the normal audible range. He would be able to hear the shrill sonar-cries of bats, for instance, and, more important, he would be able to hear voices when the speaker used a First Level audio-frequency step-up phone. He would also receive a memory-obliteration from the moment of his abduction, and a set of pseudo-memories of a visit to the Heaven of Yat-Zar, on the other side of the sky. Then he would be returned to his own time-line and left on a mountain top far from his temple, where an unknown peasant, leading a donkey, would always find him, return him to the temple, and then vanish inexplicably. Then the priest would begin hearing voices, usually while serving at the altar. They would warn of future events, which would always come to pass exactly as foretold. Or they might bring tidings of things happening at a distance, the news of which would not arrive by normal means for days or even weeks. Before long, the holy man who had been carried alive to the Heaven of Yat-Zar would acquire a most awesome reputation as a prophet, and would speedily rise to the very top of the priestly hierarchy. Then he would receive two commandments from Yat-Zar. The first would ordain that all lower priests must travel about from temple to temple, never staying longer than a year at any one place. This would insure a steady influx of newcomers personally unknown to the local upper-priests, and many of them would be First Level paratimers. Then, there would be a second commandment: A house must be built for Yat-Zar, against the rear wall of each temple. Its dimensions were minutely stipulated; its walls were to be of stone, without windows, and there was to be a single door, opening into the Holy of Holies, and before the walls were finished, the door was to be barred from within. A triple veil of brocaded fabric was to be hung in front of this door. Sometimes such innovations met with opposition from the more conservative members of the hierarchy: when they did, the principal objector would be seized with a sudden and violent illness; he would recover if and when he withdrew his objections.