God’s temple in heaven was opened,
and the ark of his covenant could be seen in the temple. A great sign appeared in the sky, a woman clothed with the sun,
with the moon under her feet,
and on her head a crown of twelve stars. (Rev 11:19-12:1)

The Resurrection of the Lord Jesus is the promise and the foretaste of the future resurrection of all who follow him and the great reunion of all the saints. The Assumption of the Blessed Virgin Mary celebrates that reunion that Mary now shares with her Son.