Animal Forms as Hardened Human Passions and Evolution

What was this event which made man capable of perceiving the forces which dwelt in the sun, those very exalted forces which had to leave the earth and unite themselves with the sun? When did this perception come to him? Gradually these forces streamed into the earth, and the most important point of time, that into which the whole thing resolves itself, was when man received full power to assimilate not only the physical forces, but also the spiritual forces of the sun in full consciousness. This was the moment of Christ's coming to the earth.