Sitchen gave an overview of concepts presented in his books, notably The 12th Planet. Sitchen refers to the 12th Planet as the ancient Sumerians did, as Nibiru, the planet of the crossing. Sitchen also stated that the 12th Planet and Planet X were one and the same, as has been noted in his books (see below).
When asked by Art Bell what the return of Nibiru would bring, Sitchen stated that Nibiru had at "one time, brought about the deluge, the great flood, mentioned in the Bible," and the return may be what the Bible calls "the day of the Lord" or "the second coming." He stated that the effect on the Earth would depend on where the Earth is positioned during the passage. Sitchen declined to state when he felt the 12th Planet would return, stating "I an not a prophet." Sitchin stressed that he called himself a "reporter," as someone who can read ancient Sumerian texts.
Sitchen called Hale-Bopp an "enigma" because it is too bright for being so far out, and referred to Hale- Bopp as a "so-called" comet. Sitchen reported that many people had called him, asking if Hale-Bopp was the return of Nibiru, because:
Sitchen stated that in his opinion, Hale-Bopp was "not Nibiru" but was rather a "harbinger" of Nibiru.
Excerpts from The 12th Planet, p 245
Various biblical passages - especially in Isaiah, Amos, and Job - relate the movement of the celestial Lord to various constellations. "Alone he stretches out the heavens and treads upon the highest Deep; he arrives at the Great Bear, Orion and Sirus, and the constellations of the south." Or, "He smiles his face upon Taurus and Aries; from Taurus to Sagittarius he shall go." These verses describe a planet that not only spans the highest heavens but also comes in from the south and moves in a clockwise direction - just as we have deduced from the Mesopotamian data. Quite explicitly, the prophet Habakkuk stated: "The Lord from the south shall come."
Excerpts from Genesis Revisited, p 71
Sumerian instructions for its observation, fully discussed in The 12th Planet, indicate that relative to the ecliptic it arrived from the southeast, from under the ecliptic; formed an arc above the ecliptic; then plunged back below the ecliptic in its journey back to where is had come from.
Excerpts from Genesis Revisited, p 319
In spite of official denials, a disclosure did leak out at the end of the year. It came in the form of an exclusive interview of the key IRAS scientists by Thomas O'Toole of the science service of the Washington Post. The story, generally ignored - suppressed, perhaps - was carried by several dailies. ... The opening paragraphs of the exclusive story began thus:
Excerpts from Genesis Revisited, p 327
By concluding that the inclination of Planet X might be as high as 30 degrees, modern astronomers corroborated Sumerian astronomical data. So does the most recent determination that the planet is orbiting toward us from the southeast, the direction of the constellation Centaurus. Nowadays we see there the zodiac constellation Libra; but in Babylonian/biblical times that was the place of Sagittarius.
Excerpts from Genesis Revisited, p 328
It can be simply illustrated that when the planet's perihelion was in Cancer, its first appearance had to be from the direction of Sagittarius. In this regard it is pertinent to quote the biblical verses from the Book of Job that describe the appearance of the Celestial Lord and its return to its distant abode: