She turned and said to him in Hebrew,
"Rabbouni," which means Teacher.
Jesus said to her,
"Stop holding on to me, for I have not yet ascended to the Father.
But go to my brothers and tell them,
'I am going to my Father and your Father,
to my God and your God.'"
The veiled character of the glory of the Risen One during this time is intimated in his mysterious words to Mary Magdalene: "I have not yet ascended to the Father; but go to my brethren and say to them, I am ascending to my Father and your Father, to my God and your God." This indicates a difference in manifestation between the glory of the risen Christ and that of the Christ exalted to the Father's right hand, a transition marked by the historical and transcendent event of the Ascension.
-- CCC 660
Art: Noli me tangere, Hans Holbein the Younger, c.1524, Royal Collection, Hampton Court.