As to the resurrection of the body of Christ three days
subsequent to His departure: This signifies the divine teachings and spiritual
religion of His Holiness Christ, which constitute His spiritual body, which is
living and perpetual forevermore.
By the "three days' of His death is meant that after
the great martyrdom, the penetration of the divine teachings and the spread of
the spiritual law became relaxed on account of the crucifixion of Christ. For
the disciples were somewhat troubled by the violence of divine tests. But when
they become firm, that divine spirit resurrected and that body - which
signifies the divine word - arose. 
- ‘Abdu’l-Baha  (‘Tablets of Abdul-Baha Abbas", vol.1;
compilation ‘Resurrection of Jesus Christ’, prepared by the Research Department
of the Universal House of Justice)