The Law Of One is a channeled work from the early 1980s by a group of dedicated channelers, including Don Elkins, Jim McCarty, and Carla Ruekert. They contacted an entity called Ra, a sixth density social memory complex, who explained their message. After a few hundred years, their message had been distorted, so they felt a sense of obligation to return and dictate The Law Of One again. 
In The Law of One (the Ra Material) channeling, the “harvest” is a planetary graduation process where souls transition from one level of consciousness (density) to a higher one at the end of a major cosmic time cycle. It is a cosmic graduation. Think of it like graduating from one grade in school to the next. It is not a sudden end-of-the-world destruction event, but a natural evolutionary shift for a planet and its inhabitants.
According to Ra, Earth’s evolutionary cycles operate in major blocks of 75,000 years, broken down into three 25,000-year sub-cycles. Earth’s third-density cycle reached its completion window around 2012, initiating the current harvest period. Humanity has been living in third density (the density of self-awareness, choice, and ego). Successful harvesting means moving into fourth density (the density of love, compassion, and understanding). The law of the harvest means that you reap what you sow, meaning your choices, actions, and efforts always produce matching results over time.
The main goal of third density is “the choice”—learning to use free will to choose between two paths of polarity:
• Positive Polarity (Service to Others): Requiring about 51% or greater focus on love, empathy, and helping others.
• Negative Polarity (Service to Self): Requiring a high degree (about 95% or greater) of focus on control, power, and separation. Souls who achieved the required positive polarization (51% service-to-others) move on to a fourth-density expression of Earth to live in a reality based on collective love and transparency. Highly polarized service-to-self individuals move to a different fourth density planet suited for continuing their specific path.
Individuals who have not polarized enough (falling between roughly 6% and 50% positive, lacking the necessary awareness or readiness) will cycle back to repeat third density on another planet designed for those lessons. No spiritual progress is ever lost; souls simply pick up where they need to grow.
Just like planting physical seeds, your daily choices, thoughts, and efforts act as seeds that eventually grow and produce a return or harvest. Sowing kindness, patience, and love yields a positive spiritual return, while negative actions bring corresponding consequences. Actions in life produce corresponding results.
In the Bible, God uses the harvest as both a literal blessing and a powerful spiritual symbol of human behavior, spiritual readiness, and final judgment.