Jesus of Nazareth as known in esoteric traditions

Only the Gospels of St Luke and St Matthew give an account , albeit a very short one , of the life of Jesus of Nazareth before the Baptism at the river Jordan , when he transformed into a vehicle/vessel/bearer of Christ.
This is the story of Jesus of Nazareth and how he was prepared to take on his unique spiritual mission in the plan of God's salvation for Man.
Edward Schure gives us a picture of Jesus as a great Initiate. Rudolf Steiner in "the Fifth Gospel" describes Jesus' hidden life through adolescense , increasing in his desire to save mankind and then, accepting God's will for him to take on the fate of a Messiah before he became the Christ