The opposing spiritual powers have a great purpose in our lives. Through them we were able to enter into this earth and become free beings. This is revealed in the story about the Garden of Eden when Lucifer, represented by the snake, opened our eyes to the physical world.
Now, through them we will earn our spiritual freedom. The forces of progress gain strength by resistance to opposition. Now the being who prevents us from seeing the spiritual world is Ahriman.
We can use these two kinds of force to see the truth behind the mystery of Golgotha, they hang on crosses each side of Christ Jesus.
Adam and Eve, ceiling fresco from the Stanza della Segnatura by Raphael