Sin means a deviation from the way things ought to be. The sin of the Earth was that it was cold and dark during Autumn and Winter. We would prefer it to be warm and light. When the Sun reaches the lamb the sin of the earth is figuratively taken away, as that is when the warmth and light of Spring and Summer finally wins over the cold and darkness of Autumn and Winter. Thus figuratively the lamb is that which takes away the sin of the earth.
It's common for solar religions to associate their savior with the zodiac symbol the Sun is in at the Vernal Equinox. Jesus is known as the "lamb of God."
"The next day John saw Jesus coming toward him and said, "Look, the Lamb of God, who takes away the sin of the world!" (John 1:29)
"When he saw Jesus passing by, he said, "Look, the Lamb of God!" (John 1:36)
Jesus is often depicted with a lamb.
10. The Sun visits Aries, a ram, sheep, or lamb, on the Vernal Equinox, when
darkness and cold, the figurative sins of the earth, are overpowered by light and warmth.
[Jesus is the lamb of God who takes away the sins of the earth.]
11. Easter, when we celebrate Jesus as risen from the grave, is celebrated on the
first Sunday after the first full moon after the Vernal Equinox. It is a Spring time
celebration of the rebirth of the Sun and the Sun overpowering the cold and darkness of