John testified; I saw how the Spirit descended like a dove from heaven upon him and remained united with him. I did not know him, but He who sent me to baptize with water said to me, "He on whom you see the Spirit descend, so that it remains united with him, he it is who baptizes with the Holy Spirit." And I saw this, and I testify that this is the Son of God."
This painting depicts the moment the Christ arises out of the water and opens His Sun eyes to Earth. Rudolf Steiner tells us that great beings worked on the body that could hold the Christ spirit for generations. Steiner reveals that Zarathrustra inhabits the body of the Nathan soul, so we have the greatest possible purity and the greatest wisdom combined in this body. John whose task it is to Witness the Light, says that he didn't know but He who sent me said....Steiner states that John has an angelic being within him, which Christ Jesus points to. So we see the Angelic being Witnessing the Light and John Witnessing the Light, this is the penultimate moment of John's life task. But this is also the penultimate moment for Zarathrusta, as he sacrifices the body he has dedicated all his lives to building up, and we see him reaching and entering the Sun realm.