Answer
In the Ascension illustration of the Rabbula Gospels,Virgin Mary symbolized the Christian Community.
Explanation
Ascension is the act of something rising or going up. This day is counted six weeks after Easter Sunday. In the ascension of Christ to Heaven, He is surrounded by four angels and below are apostles and Virgin Mary. Virgin Mary here has the status of the bearer of God and the mother of Christ. She symbolizes the whole Christian community on earth.