The Revelatory Process

Once early man starts forming tribal communities, this signifies that the planet is ripe for the first of several revelatory uplifts to occur over a lengthy period of time, and culminating in the final stabilization of the planet at the peak of its civilizational development. These uplifts have occurred as follows:

1. The 1st revelation: With the emergence of human groupings, the Planetary Prince arrived to inaugurate human civilization and to focalize human society, approx. 500,000 years ago. 
2. The 2nd revelation: When the natural course of human evolution reached its peak, an Adam and Eve pair arrived about 38,000 years ago, to provide a biological uplift to man's existing racial variations.
3. The 3rd revelation: About 3000 B.C. the concept of God had grown very hazy in the minds of men, and an special emergency revelation was carried out. 1,973 years before the birth of Jesus, Machiventa Melchizedek was bestowed upon the human races. He is referred to as the King of Salem in our ancient scriptures.
4. The 4th revelation: Joshua ben Joseph (Jesus of Nazareth) was bestowed upon the human races about 2000 years ago to deliver the good news of the resurrection, and to teach mankind that the universe is a friendly and loving place.
5. The 5th revelation: In the 20th century a 5th evolutionary uplift was given to mankind. It began in 1955 with the publishing of the Urantia Book. This uplift is currently ongoing, and so far has been extended to include the Planetary Transformation, Correcting Time, and Teaching Mission initiatives.

Extensive details about this epochal revelatory process is found in the Urantia Book.

There is also a Light & Life Timeline chart covering this process.